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Eng ID Term Definition
3081
mainland
The principal LAND or largest part of a CON­TINENT, as distinguished from a relatively small ISLAND or PENINSULA.
3082
main scheme station
See STATION.
3083
maintained depth
The depth at which a channel is kept by human influence, usually by dredging.
3084
maintenance
All procedures and activities required to keep equipment operational.
3085
major planet
See PLANET.
3086
make the land
To sight and approach or reach LAND from seaward.
3087
make way
To progress through the water.
3088
making way
Progressing through the water.
3089
mandatory routeing system
A ROUTEING SYSTEM adopted by the INTERNATIONAL MARITIME ORGANIZATION, in accordance with the requirements of regulation V/10 of the 1974 SO... more
A ROUTEING SYSTEM adopted by the INTERNATIONAL MARITIME ORGANIZATION, in accordance with the requirements of regulation V/10 of the 1974 SOLAS convention, for mandatory use by all ships, certain categories of ships or ships carrying certain cargoes.
3090
manoeuvre
Planned and controlled movement of a vehicle.
3091
mangrove
One of several genera of tropical trees or shrubs which produce many prop roots and grow along low-lying COASTS into SHALLOW WATER.
3092
manometer
An instrument for measuring pressure of gases and vapours.
3093
mantle
The relatively plastic region between the CRUST and CORE of the EARTH. Also called asthenosphe­re.
3094
manuscript map
See MAP.
3095
map
A representation (usually on a flat medium) of all or a portion of the EARTH or other CELESTIAL BODY, showing the relative size and position... more
A representation (usually on a flat medium) of all or a portion of the EARTH or other CELESTIAL BODY, showing the relative size and position of features to some given SCALE or PROJECTION; also, a representation of all or part of the CELESTIAL SPHERE. A map may emphasize, generalize, or omit the representation of certain features to satisfy specific requirements. Maps are frequently categorized and referred to according to the type of information which they are primarily desi­gned to convey, to distinguish them from maps of other types.
3096
map
(v.t.). To prepare a MAP or engage in a mapping operation.
3097
map: anaglyphic
A MAP specially printed in two comple­mentary colours in such a way that, when viewed throu­gh a twin EYEPIECE of the same colours, a three-... more
A MAP specially printed in two comple­mentary colours in such a way that, when viewed throu­gh a twin EYEPIECE of the same colours, a three-dimen­sional impression of RELIEF is seen.
3098
map: base
A MAP showing certain fundamental informa­tion, used as a base upon which additional data of specialized nature are compiled. Also, a MAP co... more
A MAP showing certain fundamental informa­tion, used as a base upon which additional data of specialized nature are compiled. Also, a MAP contai­ning all the informa­tion from which MAPS showing specialized information can be prepared; a source map.
3099
map: cadastral
A MAP showing the BOUNDARIES of subdi­vision of LAND, usually with the BEARINGS and lengths thereof and the area of individual tracts, for p... more
A MAP showing the BOUNDARIES of subdi­vision of LAND, usually with the BEARINGS and lengths thereof and the area of individual tracts, for purpo­ses of describing and recording ownership. A cadastral map may also show culture, drainage, and other fea­tures relating to the value and use of LAND. See also PLAT.
3100
map: contour
A TOPOGRAPHIC MAP which portrays RELIEF by means of CONTOURS.