ExpertGlossary terms starting with P

3,647 terms

pelargonium (PEH-lar-GOH-nee-um) A type of plant that is native to southern Africa and has white, pink, purple, or red flowers and 3- to 5-lobed leaves.
peldesine A substance that is being studied for the treatment of cancer.
Pelican Hooks Hinged hook generally on the end of a ratchet located on front of barge and connected to a caval which allows chain linked lines to be locked into mooring…
Pellet Open-source Java OWL DL reasoner.
Pellet Stove A space heating device that burns pellets; are more efficient, clean burning, and easier to operate relative to conventional cord wood burning appliances.
Pellets Solid fuels made from primarily wood sawdust that is compacted under high pressure to form small (about the size of rabbit feed) pellets for use in a…
Pelton Turbine A type of impulse hydropower turbine where water passes through nozzles and strikes cups arranged on the periphery of a runner, or wheel, which causes the…
pelvic Having to do with the pelvis (the lower part of the abdomen located between the hip bones).
pelvic examination A physical examination in which the health care professional will feel for lumps or changes in the shape of the vagina, cervix, uterus, fallopian tubes…
pelvic exenteration Surgery to remove the lower colon, rectum, and bladder, and create stomata (openings) through which urine and stool are passed out of the body.
pelvic fins Pair of juxtaposed fins ventrally on the body in front of the anus.
pelvic lymphadenectomy (PEL-vik LIM-fa-deh-NEK-toh-mee) Surgery to remove lymph nodes in the pelvis for examination under a microscope to see if they contain cancer.
pelvic wall The muscles and ligaments that line the part of the body between the hips.
pelvis The lower part of the abdomen, located between the hip bones.
PEM Program Element Monitor (AF).
pemetrexed disodium (pem-eh-TREX-ed dy-SOH-dee-um) A drug that is used to treat malignant pleural mesothelioma and advanced non-small cell lung cancer and is being studied in…
PENAID Penetration Aid.
Penaid (Penetration Aid) (Formerly an acronym for Penetration Aid.) Techniques or devices employed by offensive aerospace weapon systems to increase the probability of penetrating…
Penalty See Fee
Penalty APR The APR charged on new transactions if you trigger the penalty terms in your credit card contract.
Penalty fees Fees charged if you violate the terms of your cardholder agreement or other requirements related to your account.
Pencil Poppers A brand name topwater lure that is long and thin. Often used for catching striped bass.
penclomedine A substance that is being studied in the treatment of cancer. It belongs to the family of drugs called alkylating agents.
Pendant Echo Radar signature generally similar to a hook echo, except that the hook shape is not as well defined.
Pendens Pending.
Pendente lite Pending the litigation; while the suit continues.
Pending The status of a patent application that occurs before either an application is abandoned (withdrawn) or a patent issues.
pending file File of materials held for further action
Pending Patent Application A patent application that is pending. See Pending.
penectomy (pee-NEK-toh-mee) Surgery to remove part or all of the penis (an external male reproductive organ).
Penetrance The proportion of individuals in a population that express the phenotype expected from their genotype with respect to a specific gene.
Penetrating Top Same as Overshooting Top; a dome-like protrusion above a thunderstorm anvil, representing a very strong updraft and hence a higher potential for severe…
penetration The intentional passage, through a building wall or partition, or an equipment enclosure or chassis, of a signal-bearing communications medium, e.g.
penetration test A test of a system which attempts to breach the System Security policy. Also known as "pen-test" [CESG].
Penetration Testing The portion of security testing in which the penetrators attempt to circumvent the security features of the system.
penicillamine A drug that removes copper from the body and is used to treat diseases in which there is an excess of copper.
penicillin A drug that is used to treat infection. It belongs to the family of drugs called antibiotics.
penile cancer (PEE-nile KAN-ser) A rare cancer that forms in the penis (an external male reproductive organ).
penile implant (PEE-nile...) A firm rod or inflatable device that is placed in the penis (an external male reproductive organ) during a surgical procedure.
penis (PEE-nis) An external male reproductive organ. It contains a tube called the urethra, which carries semen and urine to the outside of the body.
Penny Ante A game played for small stakes.
Penny stock Stocks that trade for less than $1 a share are often described as penny stocks.
Pension A pension is an employer plan that's designed to provide retirement income to employees who have vested - or worked enough years to qualify for the income.
Pension (Retirement Benefit) A payment or series of payments made to you after you retire from work. Generally, the amount of your income from a pension or retirement account…
Pension Benefit Guaranty Corporation (PBGC) The PBGC was created to ensure that participants in defined benefit pension plans under its jurisdiction will receive at least a basic pension if the…
Pension maximization Pension maximization is a strategy that begins with selecting a single life annuity for income to be paid from your retirement plan, rather than a joint…
Pension Plan A defined benefit retirement annuity plan under one of the following: the South Carolina Retirement System; the Police Officers Retirement System; the…
Penstock A component of a hydropower plant; a pipe that delivers water to the turbine.
Pentanes plus A mixture of hydrocarbons, mostly pentanes and heavier fractions, extracted from natural gas. See hydrocarbons.
pentetic acid calcium (pen-TET-ik A-sid KAL-see-um) A drug that protects healthy tissues from the toxic effects of anticancer drugs.
pentosan polysulfate (PEN-tuh-SAN PAH-lee-SUL-fayt) A drug used to relieve pain or discomfort associated with chronic inflammation of the bladder.
pentostatin (PEN-toh-STA-tin) The active ingredient in a drug that is used to treat hairy cell leukemia and is being studied in the treatment of other types of cancer.
pentoxifylline A drug used to prevent blood clotting and as a treatment that may help decrease weight loss in people with cancer.
Penumbra In solar-terrestrial terms, the sunspot area that may surround the darker umbra or umbrae.
PEO Program Executive Officer.
PEO (SC/AP) Program Executive Officer, Surface Combatants/AEGIS Program.
PEO (TAD) Program Executive Officer, Theater Air Defense. (U.S. Navy)
PEO (TAD)-B Program Executive Officer, U.S. Navy Theater Ballistic Missile Defense Program Office.
PEO-AMD Program Executive Officer, Air and Missile Defense. (U.S. Army)
PEP Producibility Engineering and Planning.
PEPP Producibility Engineering and Production Planning.
peptidase An enzyme that catalyzes the hydrolysis of a peptide bond.
peptide Any compound consisting of two or more amino acids, the building blocks of proteins.
peptide 946 A protein that causes white blood cells to recognize and destroy melanoma cells.
peptide bond The chemical bond holding amino acid residues together in peptides and proteins.
peptide expression library A collection of peptide molecules, produced by recombinant cells, in which the amino acid sequences are varied.
peptide nucleic acid (Abbreviation: PNA). A synthetic oligonucleotide analogue, in which the sugar backbone is replaced by a peptide chain, upon which the nucleoside residues…
peptide vaccine A short chain of amino acids that can induce antibodies against a specific infectious agent.
peptidyl transferase An enzyme bound tightly to the large sub-unit of the ribosome, that catalyses the formation of peptide bonds between amino acids during translation.
peptidyl-tRNA binding site (Abbreviation: P-site). The site on a ribosome that hosts the tRNA to which the next amino acid for the growing polypeptide chain is attached.
Per annum Annually; by the year.
Per capita Per capita is the legal term for one of the ways that assets being transferred by your will can be distributed to the beneficiaries of your estate.
Per capita income The average income per person in a given group.
Per capita use The average amount of water used per person during a standard time period, generally per day.
Per Check Fee (If Minimum Balance is Not Maintained) The fee charged to an account holder for each check written when the balance in the account does not meet the minimum required balance.
Per Check Fee (If Minimum Balance Maintained) The fee charged to an account holder for each check written when the balance in the account meets the minimum required balance.
Per contra On the contrary.
Per curiam By the court; by the court as a whole.
Per Device licensing mode A mode in which the terminal server requests a TS Per Device client access license (TS Per Device CAL) from a Terminal Services license server so that a…
Per diem Per diem is generally understood to include the consideration for the additional expenses that a worker has living away from home.
Per se Considered by itself; taken alone.
Per se doctrine Under this doctrine, an activity such as price fixing can be declared as a violation of the antitrust laws without necessity of a court inquiring into the…
Per stirpes Per stirpes is the legal term for transferring the assets of your estate to your children and their descendants.
Per User licensing mode A mode in which the terminal server requests a TS Per User client access license (TS Per User CAL) from a Terminal Services license server so that a user…
Per viam By way of.
per-call key [A] unique traffic encryption key generated automatically by certain secure telecommunications systems to secure single voice or data transmissions.
percent break In pulsed telephone signaling (dialing), the ratio, expressed in percent, of (a) the open-circuit (break) time to (b) the sum of the open- and…
Percent Change The percent change (PC) in a statistic over a given time interval is Percent change = (Final value - Initial value) / Initial value * 100.
percentage modulation In angle modulation, the fraction of a specified reference modulation, expressed in percent. 2.
Percentile Rankings How a credit union ranks in relation to the federally insured credit unions in its peer group in key area of financial performance.
Perched Groundwater Local saturated zones above the water table which exist above an impervious layer of limited extent.
Perched Water Table Underground water lying over dry soil, and sealed from it by an impervious layer.
Percolation The filtering of a liquid passed through a medium with many fine spaces.
Percolation Deep In irrigation or farming practice, the amount of water that passes below the root zone of the crop or vegetation.
Percolation Path The course followed by water moving or percolating through any other permeable material, or under a dam which rests upon a permeable foundation.
Percolation Rate The rate at which water moves through porous media, such as soil. The intake rate used for designing wastewater absorption systems.
percutaneous (per-kyoo-TAY-nee-us) Passing through the skin, as an injection or a topical medicine.
percutaneous ethanol injection (per-kyoo-TAY-nee-us EH-thuh-nol in-JEK-shun) An injection of ethanol (alcohol) through the skin directly into the tumor to kill cancer cells.
percutaneous transhepatic biliary drainage (per-kyoo-TAY-nee-us TRANZ-heh-PA-tik BIH-lee-ayr-ee DRAY-nij) A procedure to drain bile to relieve pressure in the bile ducts caused by a blockage.
percutaneous transhepatic cholangiodrainage (per-kyoo-TAY-nee-us TRANZ-heh-PA-tik koh-lan-jee-oh-DRAY-nij) A procedure to drain bile to relieve pressure in the bile ducts caused by a blockage.