ExpertGlossary terms starting with P

3,647 terms

Price-to-earnings ratio (P/E) The price-to-earnings ratio (P/E) is the relationship between a company's earnings and its share price, and is calculated by dividing the current price…
Price-to-sales ratio A price-to-sales ratio, or a stock's market price per share divided by the revenue generated by sales of the company's products and services per share…
price/earnings ratio A common stock's current market price divided by the company's annual per share earnings.
Price/Earnings Ratio (P/E Ratio) A company’s stock price divided by its annual earnings, a widely used equity valuation measure.
Pricipal, interest, taxes, insurance and homeowners association dues (PITIA) Shorthand for principal, interest, taxes and insurance, which are the components of the housing expense.
PRIM Primary
Prima facie On the face of it; at first view.
Prima facie case A case that is sufficient and has the minimum amount of evidence necessary to allow it to continue in the judicial process.
Primacy The responsibility for ensuring that a law is implemented, and the authority to enforce a law and related regulations.
Primaquine A drug used against malaria for the prevention of P. vivax or for the eradication of the hypnozoites of P. vivax and P. ovale.
primary First in order of time or development.
Primary (or Principal) Spillway The spillway which would be used first during normal inflow and flood flows.
Primary Air The air that is supplied to the combustion chamber of a furnace.
Primary Ambient Air Quality Standards Air quality standards designed to protect human health.
primary antibody In an ELISA or other immunological assay, the antibody that binds to the target molecule.
Primary authority Constitutions, codes, statutes, ordinances, and case law sources.
primary cancer The first or original cancer.
Primary Care Health services that cover a range of prevention, wellness, and treatment for common illnesses.
primary care doctor A doctor who manages a person's health care over time. A primary care doctor is able to give a wide range of care, including prevention and treatment, can…
Primary Care Physician A physician (M.D. – Medical Doctor or D.O. – Doctor of Osteopathic Medicine) who directly provides or coordinates a range of health care services for…
Primary Care Physician (PCP) Your Primary Care Physician ("PCP") is the doctor you choose to provide basic health care.
Primary Care Provider A physician (M.D. – Medical Doctor or D.O. – Doctor of Osteopathic Medicine), nurse practitioner, clinical nurse specialist or physician assistant, as…
Primary cell A cell or cell line taken directly from a living organism, which is not immortalized.
primary cell wall The cell wall layer formed during cell expansion. Plant cells possessing only primary walls may divide or undergo differentiation.
primary central nervous system lymphoma (PRY-mayr-ee SEN-trul NER-vus SIS-tem lim-FOH-muh) Cancer that forms in the lymph tissue of the brain, spinal cord, meninges (outer covering of the…
primary channel The channel that is designated as a prime transmission channel and is used as the first choice in restoring priority circuits. 2.
primary CNS lymphoma (PRY-mayr-eeÃ¢ÂÂ¦lim-FOH-muh) Cancer that forms in the lymph tissue of the brain, spinal cord, meninges (outer covering of the brain), or eye…
primary coating The plastic overcoat in intimate contact with the cladding of an optical fiber, applied during the manufacturing process.
primary colors Any group of two or more (three, in most applications) discrete colors (optical wavelengths) that are (a) of relatively narrow spectral width, and (b)…
Primary Control Tide Station A tide station where continuous observations have been made for a minimum of 19 years.
primary culture A culture started from cells, tissues or organs taken directly from organisms. A primary culture may be regarded as such until it is sub-cultured for the…
primary distribution system A system of alternating current distribution for supplying the primaries of distribution transformers from the generating station or substation…
primary DNS suffix The Domain Name System (DNS) suffix that a computer uses to identify the DNS domain to which it belongs.
Primary Domain Controller Emulator (PDC) PDC provides backward compatibility to Windows NT. In native forest, manages password changes and synchronizes time between DCs.
primary effusion lymphoma (PRY-mayr-ee eh-FYOO-zhun lim-FOH-muh) A rare, aggressive (fast-growing) type of B-cell non-Hodgkin lymphoma marked by an abnormal build-up of fluids in a…
Primary Election An election held by a political party under Chapter 172 of the Texas Election Code to select its nominees for public office, and, unless the context…
primary endpoint The main result that is measured at the end of a study to see if a given treatment worked (e.g.
primary examiner a patent examiner who is fully authorized to sign office actions (signatory authority) regarding patentability
Primary excavation Digging in undisturbed soil, as distinguished from rehandling stockpiles.
Primary Façade A facade facing a street or a public thoroughfare that is not necessarily a municipally dedicated space, such as a mews or court.
primary frequency A frequency that is assigned for usual use on a particular circuit. 2. The first-choice frequency that is assigned to a fixed or mobile station for…
primary frequency standard A frequency source that meets national standards for accuracy and operates without the need for calibration against an external standard.
Primary germ layers See: germ layer.
primary group See group.
primary growth 1. Apical meristem -derived growth; the tissues of a young plant. 2. Explant growth during the initial culture period.
primary immune response The immune response that occurs during the first encounter of a mammal with a given antigen.
primary immunodeficiency A group of rare inherited disorders of the immune system, including adenosine deaminase deficiency, severe combined immunodeficiency (SCID), and…
Primary inputs Capital and labor inputs to production; the related costs include, for example, compensation, profits, and depreciation.
primary interexchange carrier (PIC) A carrier chosen by a subscriber to be accessible via simplified dialing pattern. [T1.246-1998/99]
primary key One or more attributes whose values uniquely identify a row in a database table. See also foreign key.
Primary market If you buy stocks or bonds when they are initially offered for sale, and the money you spend goes to the issuer, you are buying in the primary market.
primary meristem Meristem of the shoot or root tip giving rise to the primary plant body.
Primary Mortgage Market The market for newly originated mortgages.
primary myelofibrosis (... MY-eh-loh-fy-BROH-sis) A progressive, chronic disease in which the bone marrow is replaced by fibrous tissue and blood is made in organs such as the…
Primary oil recovery Pumping out the crude oil that flows by gravity into the bottom of an oil well. See enhanced oil recovery, secondary oil recovery.
Primary or Principal Residence the property in which the homeowner will live most of the time, as distinct from a second home or an investor property that will be rented.
primary ovarian insufficiency (PRY-mayr-ee oh-VAYR-ee-un IN-suh-FIH-shen-see) A condition in which the ovaries stop working before age 40.
primary package The package that normally runs on the cluster in a production environment.
primary partition A type of partition created on basic disks that can host an operating system and functions as though it were a physically separate disk.
primary point code (PPC) The point code identification of the primary destination of the signaling connection control plan (SCCP) routing verification test (SRVT) message. [T1.
Primary Pollutant Substances that are pollutants immediately on entering the atmosphere. Compare secondary pollutant.
primary polymer coating Synonym primary coating.
primary polymer overcoat Synonym primary coating.
primary power The source of electrical power that usually supplies the station main bus. Note 1: The primary power source may be a Government-owned generating plant or…
Primary producer The industry that is the main producer of a particular good or service. Typically, this industry shares the same name as the good or service.
Primary product The principal good or service produced by an industry, which is used to classify establishments in the Standard Industrial Classification System (SIC) or…
Primary production Creation of organic matter by photosynthesis.
primary protector A protective device placed on telecommunications conductors in accordance with ANSI/NFPA 70. [T1.321-1995]
primary radar A radiodetermination system based on the comparison of reference signals with radio signals reflected from the position to be determined. [NTIA] [RR]
primary radiation Radiation that is incident upon a material and produces secondary emission from the material.
primary rate access (PRA) path The logical connection between extended superframe termination points (i.e., path terminations) on the customer access (CA) and the customer installation…
primary rate interface (PRI) An integrated services digital network (ISDN) interface standard (a) that is designated in North America as having a 23B+D channels, (b) in which all…
primary reference source Equipment that provides a timing signal whose long-term accuracy is maintained at 1 x 10-11 or better with verification to Coordinated Universal Time…
primary replica The replica designated to be the only recipient of updates by the Administration Process.
Primary residence/second home A property is classified as a primary residence if it is the place where the owner lives most of the time.
primary route The predetermined path of a message from its source, i.e., sending or originating station, to a message sink, i.e.
primary service area The service area of a broadcast station in which the groundwave is not subject to objectionable interference or objectionable fading. [47CFR]
primary station 1. In a data communication network, the station responsible for unbalanced control of a data link.
primary structure The linear sequence of residues making up a polymer such as a nucleic acid, polysaccharide or protein.
primary subject main topical heading in a hierarchal file classification system See also main heading.
primary substation Equipment that switches or modifies voltage, frequency, or other characteristics of primary power.
Primary Swell Direction Prevailing direction of swell propagation.
primary therapy (PRY-mayr-ee THAYR-uh-pee) The first treatment for a disease or condition. In patients with cancer, primary therapy can be surgery, chemotherapy…
primary time standard A time standard that does not require calibration against another time standard.
primary tissue A tissue that has differentiated from a primary meristem.
primary traffic Traffic measured or studied during one or more study weeks for which data are collected and processed.
primary transcript The RNA molecule produced by transcription prior to any post-transcriptional modifications; also called a pre-mRNA in eukaryotes.
primary treatment (PRY-mayr-ee ...) The first treatment for a disease or condition. In patients with cancer, primary treatment can be surgery, chemotherapy, radiation…
Primary Tumor The original tumor.
primary-digit filing A numeric filing system in which the first digits are used as the method of organizing and finding in a records management system See also middle-digit…
Prime See Subprime
Prime Contractor A contractor having responsibility for design control and delivery of a system or equipment such as aircraft, engines, ships, tanks, vehicles, guns and…
Prime Loans Loans typically extended to the most credit-worthy borrowers that generally carry a lower interest rate compared to other types of loans.
Prime Mortgages A classification of mortgages that are considered to be of high quality.
Prime Mover Any machine capable of producing power to do work.
Prime Rate The prime rate is a benchmark for interest rates on business and consumer loans.
Primer A short DNA or RNA fragment annealed to single-stranded DNA, from which DNA polymerase extends a new DNA strand to produce a duplex molecule.
primer walking A method for sequencing long (>1 kbp) cloned pieces of DNA. The initial sequencing reaction reveals the sequence of the first few hundred nucleotides of…
primitive An abstract, implementation-independent, interaction between a layer service user and a layer service provider. [T1.629-1999]
primitive neuroectodermal tumor (PRI-muh-tiv NOOR-oh-EK-toh-DER-mul TOO-mer) One of a group of cancers that develop from the same type of early cells, and share certain biochemical and…