Definitions beginning with M

The 1982 antitrust suit settlement agreement ("Consent Decree") entered into by the United States Department of Justice and the American Telephone and Telegraph Company (AT&T) that, after modification and upon approval of the United States District Court for the District of Columbia, required the divestiture of the Bell Operating Companies from AT&T.
ATIS - Cite This Source - This Definition
Browse Related Terms: Bell Operating Company (BOC), divestiture, local access and transport area (LATA), RBOC, Regional Bell Operating Company (RBOC), Service Management Team (SMT), slamming, Testline Coordinator

Modified adjusted gross income (MAGI) - permalink - collapse

All > Business > Finance > Personal Finance

Your modified adjusted gross income (MAGI) is your adjusted gross income (AGI) plus deductions, such as college loan interest and contributions to a deductible individual retirement account (IRA), which you may qualify to take if your MAGI is less than the annual ceilings set by Congress.
Other deductions, such as alimony, don't have income limits.
For example, suppose you're single, have a gross income of $51,000, and you're eligible to take a deduction for your IRA contribution of $4,000. Your AGI, when all deductions are taken, turns out to be $45,500. You then add the $4,000 back to find your MAGI of $49,500. Because your MAGI is less than the ceiling for deducting your full IRA contribution for your filing status, which is $50,000 if you are single, you can take the full deduction.

Yahoo Finance - Cite This Source - This Definition
Browse Related Terms: Adjusted gross income (AGI), Cap, Earned Income, Individual retirement account (IRA), Individual retirement annuity, individual retirement arrangement (IRA), Recharacterization, Roth IRA

modified AMI code - permalink - collapse

All > Technology > Telecommunications

Abbreviation for modified alternate mark inversion code. A T-carrier AMI line code in which bipolar violations may be deliberately inserted to maintain system synchronization. Note 1: The clock rate of an incoming T-carrier signal is extracted from its bipolar line code. T-carrier was originally developed for voice applications. When voice signals are digitized for transmission via T-carrier, there is no problem in maintaining system synchronization, because of the nature of the digitized signals. However, when used for the transmission of digital data, the conventional AMI line code may fail to have sufficient marks, i.e., "1's," to permit recovery of the incoming clock, and synchronization is lost. This happens when there are too many consecutive zeros in the user data being transported. To prevent loss of synchronization when a long string of zeros is present in the user data, deliberate bipolar violations are inserted into the line code, to create a sufficient number of marks to maintain synchronization. The receive terminal equipment recognizes the bipolar violations and removes from the user data the marks attributable to the bipolar violations. Note 2: The exact pattern of bipolar violations that is transmitted in any given case depends on the line rate and the polarity of the last valid mark in the user data prior to the unacceptably long string of zeros. Note 3: The number of consecutive zeros that can be tolerated in user data depends on the data rate, i.e., the level of the line code in the T-carrier hierarchy. The North American T1 line code (1.544 Mb/s) does not use bipolar violations. The European T1 line code (2.048 Mb/s) may use bipolar violations when 8 or more consecutive zeros are present. This line code is called bipolar with eight-zero substitution (B8ZS). (In all levels of the European T-carrier hierarchy, the patterns of bipolar violations that are used differ from those used in the North American hierarchy.) At the North American T2 rate (6.312 Mb/s), bipolar violations are inserted if 6 or more consecutive zeros occur. This line code is called bipolar with six-zero substitution (B6ZS). At the North American T3 rate (44.736 Mb/s), bipolar violations are inserted if 3 or more consecutive zeros occur. This line code is called "bipolar with three-zero substitution" (B3ZS).
ATIS - Cite This Source - This Definition
Browse Related Terms: bias, cliff effect, data scrambler, decision instant, descrambler, margin, Threshold

Modified Duration - permalink - collapse

All > Business > Finance > Investment

The weighted average time to receipt of all cashflows, including coupon payments, on a present value basis. For corporate bonds, cashflows to the stated maturity date are used, regardless of any options features. For mortgage-backed securities (pass-throughs, C.M.O.s and A.R.M.s), cashflows are derived from the PSA/CPR for the security.
Office of the Arizona State Treasurer - Cite This Source - This Definition
Browse Related Terms: Asset, Asset Backed Securities, CMOs (Collateralized Mortgage Obligations), Collateral, Liability, Mortgage-backed Security, trust

Modified homogeneous earthfill dam - permalink - collapse

All > Science > Water

A homogeneous earthfill dam that uses pervious material specially placed in the embankment to control seepage. See embankment dam.

Bureau of Reclamation - Cite This Source - This Definition
Browse Related Terms: Diaphragm-type earthfill, Embankment dam or fill dam, Fuse plug spillway, Homogeneous earthfill dam, Pervious zone, Semipervious zone., Transition zone (semipervious zone), Zoned earthfill (or zoned embankment)

Modified Mercalli scale - permalink - collapse

All > Science > Water

An earthquake intensity scale which has twelve divisions ranging from I (not felt by people) to XII (nearly total damage). For more information on the modified Mercalli scale, visit the U.S. Geological Survey National Earthquake Information Center.

Bureau of Reclamation - Cite This Source - This Definition
Browse Related Terms: Decibel, Intensity scale, Qualitative, Quantitative, Richter scale, Seismic intensity

modified radical mastectomy - permalink - collapse

All > Medicine > Cancer

(... RA-dih-kul ma-STEK-toh-mee) Surgery for breast cancer in which the breast, most or all of the lymph nodes under the arm, and the lining over the chest muscles are removed. Sometimes the surgeon also removes part of the chest wall muscles.
National Cancer Institute - Cite This Source - This Definition
Browse Related Terms: Halsted radical mastectomy, partial mastectomy, radical mastectomy, segmental mastectomy

modifier - permalink - collapse

All > Technology > Programming > Perl

See "statement modifier", "regular expression modifier", and "lvalue modifier", not necessarily in that order.
Perl - Cite This Source - This Definition
Browse Related Terms: bareword, cloister, lvaluable, lvalue modifier, options, regular expression modifier

modifying gene - permalink - collapse

All > Science > Biotechnology and Genetics > Food Biotechnology

A gene that affects the expression of some other gene.
UN Food and Agriculture Organization - Cite This Source - This Definition
Browse Related Terms: biosilk, cis-acting sequence, dosage compensation, epigenetic variation, EST, Express, expressivity, Gene expression, gene imprinting, glucocorticoid, immediate early gene, incomplete penetrance, inhibitor, penetrance, position effect, variable expressivity

MODIL - permalink - collapse

All > Technology > Defense

See Manufacturing Operations, Development, and Integration Laboratory. 188
DoD Missile Defense Agency - Cite This Source - This Definition
Browse Related Terms: ALI, CIDSE, CIM, CISF, CRISD, ILS, ILSP, ISP, ISWG

Mod_rewrite - permalink - collapse

All > Technology > Search > SEO / Search Marketing

A module or plugin for Apache web servers that can be used to rewrite requested URLs on the fly. It supports an unlimited number of rules and an unlimited number of attached rule conditions for each rule to provide a flexible and powerful URL manipulation mechanism. Which can be used to offer both search engine friendly URLs, thus increasing indexing chances for a dynamic database driven website.
SEO Glossary.com - Cite This Source - This Definition
Browse Related Terms: Mod_rewrite, Re-submission, Registration, Resubmission, Rewrite, URL Rewrite, URL Submission

modular - permalink - collapse

All > Technology > Telecommunications

Pertaining to the design concept in which interchangeable units are used to create a functional end product.
ATIS - Cite This Source - This Definition
Browse Related Terms: bistable, cold standby, default, programmable