2. English
  3. English

English

Page settings

Appearance

Here you can select the number of cards to be placed in a row for each of supported screen resolutions. Your current resolution is highlighted in this way.

Page size

Total record count: 6269.

Cancel Save changes
Use the “Quick Search” box to locate your required term and/or definition. The following “Search conditions” can be used to refine your search: “Contains”, “Begins with”, “Ends with”, “Equals”, “Does not contain” or “Does not equal.”
Refresh
Export
Eng ID Term Definition
5721
tropospheric scattering
Diffusion of electromagnetic waves when traversing the troposphere. See also: SCATTERING.
5722
trough
A long DEPRESSION of the SEAFLOOR characteristically flat bottomed and steep sided and normally shallower than a TRENCH.
5723
trough compass
See DECLINA­TOIRE.
5724
true
(adj.). Related to TRUE NORTH. Actual, as contrasted with fictitious, as true SUN. Related to a fixed point, either on the EARTH or in space... more
(adj.). Related to TRUE NORTH. Actual, as contrasted with fictitious, as true SUN. Related to a fixed point, either on the EARTH or in space, as TRUE WIND; in contrast with relative, which is related to a moving point. Corrected, as TRUE AL­TITUDE.
5725
true altitude
See ALTITUDE.
5726
true azimuth
See AZIMUTH.
5727
true bearing
See BEARING.
5728
true course
See COURSE.
5729
true horizon
See HORIZON.
5730
true meridian
See MERIDIAN.
5731
true north
See NORTH.
5732
true solar time
See TIME: APPARENT SOLAR.
5733
true sun
See SUN: AP­PARENT.
5734
true wind
WIND VECTOR in relation to the EARTH's surface. For a moving object it is the vector sum of the RELATIVE WIND and the VELOCITY of the object... more
WIND VECTOR in relation to the EARTH's surface. For a moving object it is the vector sum of the RELATIVE WIND and the VELOCITY of the object.
5735
trumpet buoy
See BUOY: SOUND.
5736
trunnion axis
See AXIS: HORIZONTAL.
5737
tsunami
A long-period sea wave produced by a submarine EARTHQUAKE or volcanic eruption. It may travel unnoticed across the OCEAN for thousands of MI... more
A long-period sea wave produced by a submarine EARTHQUAKE or volcanic eruption. It may travel unnoticed across the OCEAN for thousands of MILES from its point of origin. It builds up to great HEIGHTS over shoal water. Also called tunami, TIDAL WAVE, seismic sea wave.
5738
tubular compass
See COMPASS.
5739
tufa
A chemical SEDIMENTARY ROCK composed of calcium carbonate or silica, precipi­tated from percolating ground water or from a SPRING.
5740
tuff
A ROCK formed of fragments of volcanic origin, DUST, ashes, etc., thrown out of a volcano during an eruption, frequently hardened to a ROCK.... more
A ROCK formed of fragments of volcanic origin, DUST, ashes, etc., thrown out of a volcano during an eruption, frequently hardened to a ROCK. Hence tuff-cone, a volcanic cone built up of such material.