matchboard
nounCarpentry
A type of wooden board that connects with others using a tongue and groove system
Entries starting with M
245 entries.
matchbox skirt
A type of skirt consisting of a boxy and rectangular shape.
matrix
In hot metal typesetting, a mold for casting a letter.
matrixing
An electronic procedure to generate a signal from multiple signal inputs, for example quadraphonic encoding into two channels.
maundril
A pick with two prongs, used for prying.
MB
verbManufacturing
Abbreviation of make bobble.
MC
nounManufacturing
Initialism of main colour.
McIntire joint
An electrical connection spliced together by means of a sleeve (double tube of copper for this purpose).
MCT
nounAutomotive
Initialism of multi-clutch transmission.
MDM
Initialism of multiplexer-demultiplexer.
mean distance between failure
nounRail equipment
A measure of reliability that expresses the average distance travelled by a type of lorry, bus, rolling stock, etc, before preventative or reparative maintenance is required.
mean free time
The average time between collisions of a molecule in a fluid.
meas
verbManufacturing
Abbreviation of measures.
measure twice and cut once
proverbCarpentry
One should double-check one's measurements for accuracy before cutting a piece of wood; otherwise it may be necessary to cut again, wasting time and material.
mechanical advantage
The ratio of the output force produced by a machine (especially a simple machine) to the applied input force.
mechanical splice
A junction of two or more optical fibres aligned and held in place by a small self-contained assembly.
mechanobiology
The study of the mechanics (physical forces and interactions) of biological systems
medium
One of several common sizes to which an item may be manufactured, smaller than a large but larger than a small.
medium scale integration
An integration type for digital circuits that contain hundreds of transistors providing dozens of logic gates per chip.
mediumweight
adjectiveManufacturing
Of a middling weight, between lightweight and heavyweight.
meet-me room
A place within a co-location centre where telecommunications companies can physically connect to one another and exchange data without incurring local loop fees.
megacandela
An SI unit of luminous intensity equal to 10⁶ candelas. Symbol: Mcd
megagram
An SI unit of mass equal to 10⁶ grams. Symbol: Mg
megahenry
An SI unit of electrical inductance equal to 10⁶ henrys. Symbol: M
megajoule
An SI unit of energy equal to 10⁶ joules. Symbol: MJ
megaohm
An SI unit of resistance equal to 10⁶ ohms. Symbol: MΩ
megapascal
An SI unit of pressure equal to 10⁶ pascals. Symbol: MPa
megasecond
An SI unit of time equal to 10⁶ seconds. Symbol: Ms. (= 11.5741 days)
megatall
nounConstruction
A building approximately between 600 meters and 900 meters tall, (between 2000 feet and 3000 feet tall). A building taller than a supertall.
melt out
verbMetallurgy
To remove (a substance) by melting it.
memory bank
A hardware-dependent logical unit of storage in an electronic.
memory chip
A RAM, ROM, PROM, EPROM or EEPROM microchip that can be plugged into a personal computer to provide temporary or permanent memory.
memory effect
The situation in which nickel-cadmium rechargeable batteries gradually lose their maximum energy capacity if they are repeatedly recharged after being only partially discharged.
menqach
A specialized, heavy, dual-headed hammer or chisel used by Moroccan artisans (Maâlems) in Fez to hand-cut and bevel the edges of zellige tiles.
merchant iron
nounMetalworking
Iron in a common, marketable bar form that is convenient for sale and use.
mercury arc rectifier
A rectifier which converts alternating current to direct current, using a cathode tube with a pool of liquid mercury. Now superseded by solid-state rectifiers.
mesa
a structure with components rising above the insulating substrate that surrounds it
mesh
In mesh analysis: a loop in an electric circuit (to which Kirchhoff's voltage law can be applied).
mesh analysis
A method of solving for the currents in an electric circuit, in which a system of equations is written for mesh currents (using Kirchhoff's voltage law) around each mesh (loop).
mesh current
In mesh analysis: a construct representing a component of current associated with a particular mesh (loop); the real current on a wire is the sum of the (either positive of negative, depending on direction) mesh currents running through it.
metal
Chemical elements or alloys, their ores, and the mines where their ores come from.
metal master
A metal sheet used in offset printing for carrying ink onto the rubber printing form.
metallic waterproofing
nounConstruction
finely graded iron particles combined with an oxidizing catalyst. When mixed with water (or water, cement and sand), the finely distributed particles expand, creating a waterproof layer that becomes part of the surface to which it is applied.
metalliferous
adjectiveMetallurgy
Containing a metallic element. Often used to describe ores that are mined commercially.
metallist
nounMetallurgy
A person who works with metals.
metallography
nounMetallurgy
The study of the structure of metals and their alloys, by any of a variety of techniques
metallostatic
adjectiveMetallurgy
Measured within the body of liquid metal
metallurgical
adjectiveMetallurgy
Of or relating to metallurgy, the study of metals and their properties.
metalman
A workman who takes the roof down to give the miners more height to work in.
metes and bounds
nounSurveying
A description of a piece of land consisting of both measurements (metes) of the land and owners of land which is adjacent to (bounds) it.
methyl t-butyl ether
nounAutomotive
C₅H₁₂O ; an organic compound used to increase octane ratings of gasoline, through added oxygen
methyl tert-butyl ether
nounAutomotive
C₅H₁₂O ; an organic compound used to increase octane numbers of gasoline, through added oxygen, as an anti-knock additive
methylcyclopentadienyl manganese tricarbonyl
nounAutomotive
(CH₃C₅H₄)Mn(CO)₃ ; an octane number boosting additive to unleaded gasoline to replace tetra-ethyl lead as an anti-knock component
MHL
Initialism of mobile high-definition link, a cable and link standard, typically for connecting a micro-USB form factor port on a mobile device to an HDMI port on a screen.
mi-parti
adjectiveTextile production
Vertically divided into distinctly-coloured or patterned halves; party per pale.
mica insulator
A sheet of electric insulator material made from mica placed between a power semiconductor device and the heat sink.
microbore
nounPlumbing
A kind of narrow tubing with an outside diameter of 10 millimetres or less.
microcircuit
An electronic device, usually fabricated by photolithography, that is very small and implements several components or their equivalent; an integrated circuit.
microcontroller
A microcomputer on a single chip, used to control some device such as an automobile engine or a toy.
microgram
An SI unit of mass equal to 10⁻⁶ grams. Symbol: μg A unit of mass equal to one millionth of a gram, or 0.000 001 grams.