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Eng ID Term Definition
3281
microwave distance measurement
Any method of ELECTRO­MAGNETIC DISTANCE MEASUREMENT based on a comparison of radio microwave signals.
3282
mid-channel buoy
A BUOY for marking the middle of a CHANNEL.
3283
middle ground
A shallow area in otherwise deeper water with CHANNELS on both sides of it.
3284
middle ground buoy
A BUOY marking a SHOAL with CHAN­NELS on both sides. See BIFURCA­TION BUOY, JUNCTION BUOY.
3285
middle latitude
Half the arithmetical sum of the LATITUDES of two places on the same side of the EQUA­TOR.
3286
middle latitude sailing
See SAILING.
3287
mid-extreme tide
See TIDE.
3288
midnight
Twelve HOURS from NOON, or the instant the time reference crosses the LOWER BRANCH of the refe­rence CELESTIAL MERIDIAN.
3289
mil
1. 1/6400 of the circumference of a circle. Approximately 1/1000 radian. 2. 1/1000 of an inch.
3290
mile
A unit of distance. See INTERNATIONAL NAUTICAL MILE, SEA MILE, STATUTE MILE.
3291
military practice area
See EXERCISE AREA.
3292
Milky Way
A broad, faintly luminous band seen across the sky at night, consisting of innumerable STARS and nebulae, so distant as to be indistinguish­... more
A broad, faintly luminous band seen across the sky at night, consisting of innumerable STARS and nebulae, so distant as to be indistinguish­able without a TELESCOPE.
3293
millibar
A unit of pressure equal to 1/1,000 of a BAR. The millibar is much used in METEOROLOGY.
3294
milligal
A unit of AC­CELERATION equal to 1/1,000 of a GAL, or 1/1,000 centimetre per SECOND, per SECOND. This unit is used in gravity measurement, b... more
A unit of AC­CELERATION equal to 1/1,000 of a GAL, or 1/1,000 centimetre per SECOND, per SECOND. This unit is used in gravity measurement, being appro­ximate­ly one-millionth of the average GRAVITY at the EARTH's surface.
3295
mineral development platform
See PLATFORM: MINERAL DEVELOPMENT.
3296
minimum squares
See LEAST SQUARES.
3297
minimum thermometer
See THERMOMETER.
3298
minor control
See CONTROL: PHOTOGRAMMETRIC.
3299
minor control plot
See RADIAL TRIANGULATION.
3300
minor planet
An ASTEROID.