lunar : Idioms & Phrases
Index
Common lunar year
- the period of 12 lunar months, or 354 days.
Webster 1913
Embolismic year , ∨ Intercalary lunar year
- the period of 13 lunar months, or 384 days.
Webster 1913
lunar calendar
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noun a calendar based on lunar cycles
WordNet
Lunar caustic
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noun silver nitrate fused into sticks and formerly used as a caustic
WordNet
(Med. Chem.) , silver nitrate prepared to be used as a cautery; so named because silver was called luna by the ancient alchemists.
Webster 1913
lunar crater
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noun a crater on the Earth's Moon
WordNet
Lunar cycle
- . Same as
Metonic cycle . See underCycle .
Webster 1913
lunar day
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noun the period of time taken for the moon to make one full rotation on its axis (about 27.3 sidereal days)
WordNet
Lunar distance
- the angular distance of the moon from the sun, a star, or a planet, employed for determining longitude by the
lunar method .
Webster 1913
lunar eclipse
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noun the earth interrupts light shining on the moon
WordNet
lunar excursion module
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noun a spacecraft that carries astronauts from the command module to the surface of the moon and back
LEM; lunar excursion module.
WordNet
lunar latitude
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noun an imaginary line around the moon parallel to its equator
WordNet
Lunar method
- the method of finding a ship's longitude by comparing the local time of taking (by means of a sextant or circle) a given lunar distance, with the Greenwich time corresponding to the same distance as ascertained from a nautical almanac, the difference of these times being the longitude.
Webster 1913
lunar module
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noun a spacecraft that carries astronauts from the command module to the surface of the moon and back
LEM; lunar excursion module.
WordNet
Lunar month
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noun the period between successive new moons (29.531 days)
lunation; synodic month; moon.
WordNet
- . See
Month . - the period of one revolution of the moon, particularly a synodical revolution; but several kinds are distinguished, as the
synodical month , or period from one new moon to the next, in mean length 29 d. 12 h. 44 m. 2.87 s.; thenodical month , or time of revolution from one node to the same again, in length 27 d. 5 h. 5 m. 36 s.; thesidereal , or time of revolution from a star to the same again, equal to 27 d. 7 h. 43 m. 11.5 s.; theanomalistic , or time of revolution from perigee to perigee again, in length 27 d. 13 h. 18 m. 37.4 s.; and thetropical , or time of passing from any point of the ecliptic to the same again, equal to 27 d. 7 h. 43 m. 4.7 s.
Webster 1913
Lunar observation
- an observation of a lunar distance by means of a sextant or circle, with the altitudes of the bodies, and the time, for the purpose of computing the longitude.
Webster 1913
Lunar tables
- .
(a) (Astron.) Tables of the moon's motions, arranged for computing the moon's true place at any time past or future .(b) (Navigation) Tables for correcting an observed lunar distance on account of refraction and parallax.
Webster 1913
lunar time period
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noun there are usually two high and two low tides each day
tide.
WordNet
Lunar year
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noun a period of 12 lunar months
WordNet
- the period of twelve lunar months, or 354 days, 8 hours, 48 minutes, and 34.38 seconds.