the Aviation Dictionary

meteorology - The study of weather and atmospheric
phenomena.
meter - 1. A device used to measure, indicate, or record.
2. The basic unit of length measurement in the metric
system equal to approximately 39.37".
meter fix timetslot time - A calculated time to depart
the meter fix in order to cross the vertex at the ACLT.
This time reflects descent speed adjustment and any
applicable time that must be absorbed prior to crossing
the meter fix.
meter list display interval - A dynamic parameter that
controls the number of minutes prior to the flight plan
calculated time of arrival at the meter fix for each
aircraft, at which time the TCLT is frozen and becomes
an ACLT; i.e., the VTA is updated and consequently
the TCLT modified as appropriate until frozen at which
time updating is suspended and an ACLT is assigned.
When frozen, the flight entry is inserted into the arrival
sector's meter list for display on the sector PVDNDM.
MLDI is used if filed true airspeed is less than or equal
to freeze speed parameters (FSPD).
meteorology . microbes
methyl bromide - A fire extinguishing agent (CH3Br).
More effective than C02 from a standpoint of weight,
but more toxic than COz. It will seriously corrode
aluminum alloy, zinc, and magnesium. Methyl bromide
cannot be used in areas where harmful concentrations
can enter personnel compartments.
methylene chloride - A liquid solvent (CH2CL2) used
as the active agent in many paint strippers.
methyl-ethyl-ketone (MEK) - A low-cost solvent
similar to acetone. Used as a cleaning agent to prepare
a surface for painting and as a stripper for certain
finishes. Should be used only in well-ventilated areas.
metric horsepower - A measurement of power in the
metric system of measurement. One metric horsepower
is equal to 1.0139 mechanical horsepower in the
system of measurement used in the United States.
metric prefiges - A system of prefixes that indicate
multiples and submultiples of ten. Some of the more
common prefixes used are:
Tera 1012
metering - A method of time-regulating arrival traffic
Giga lo9
~ e lo6 ~ a
flow into a terminal area so as not to exceed a Kilo lo3
predetermined terminal acceptance rate. milli 10"
micro 10.~
metering airports - Airports adapted for metering and
nano
for which optimum flight paths are defined. A
pic0
maximum of 15 airports can be adapted.
lo-''
mho - A unit of electrical conductance; the reciprocal of
metering device --A device used to measure or control
ohm.
the amount of fluid flow.
mica - A transparent silicate mineral. It is used as an
metering fn - A fix along an established route from
electrical insulator in capacitors and as an insulator for
over which aircraft will be metered prior to entering
electric irons and heaters.
terminal airspace. Normallv, this fix should be
established at' a distance from the airport that will Micarta - A phenolic-type thermosetting resin
facilitate a profile descent 10,000 feet above airport impregnated cloth. It is used as an electrical insulator
elevation (AAE) or above.
and for the manufacturing of control pulleys.
metering jet - The calibrated orifice in a fluid-flow
system used to control the amount of flow for a given
pressure drop across the iet.
metering pin - A flow control device such as a tapered
pin in an oleo shock absorber used to progressively
restrict the passage of fluid from one chamber into the
other, cush:loning the landing impact. The shape or
contour of the metering pin determines the amount of
fluid that can flow with the pin in any position other
than full in or fill out.
metering valve - A valve used to control the flow of a
fluid.
meter-kilogram - The amount of work produced when
one kilogram of force acts through a distance of one
meter.
methanol wood alcohol -A liquid alcohol produced by
the distillation of wood pulp.
Aircraft Technical Book Company
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http:llwww.ACTechbooks.com
mice - Small sheet metal, wedge-shaped tabs inserted
into the tail pipe of some older turbine engines to
reduce the nozzle opening - and increase thrust. Used to
"trim" a turbine engine. Also referred to as tail pipe
inserts.
micro - One millionth (0.000001) of a unit.
microammeter - An electrical current measuring
instrument capable of measuring current flow in
millionths of an ampere.
microballoons - Microscopic-size phenolic or glass
spheres used to add body with very little weight to a
resin when used as a filler or potting compound.
microbarograph - An instrument used in meteorology
to measure very small changes in pressure.
microbes - Microscopic forms of animal life. They exist
in water and feed on hydrocarbon aircraft fuel.