HELIOMETER
heliometer
(noun) an instrument used to measure the angular separation of two stars that are too far apart to be included in the field of view of an ordinary telescope
Source: WordNet® 3.1
Etymology
Noun
heliometer (plural heliometers)
An astronomical instrument, based on a telescope, for measuring the diameter of the sun; now used to measure the angular distance between stars and other celestial bodies.
Source: Wiktionary
He`li*om"e*ter, n. Etym: [Helio- + -meter: cf. F. héliomètre.] (Astron.)
Definition: An instrument devised originally for measuring the diameter of the sun; now employed for delicate measurements of the distance and relative direction of two stars too far apart to be easily measured in the field of view of an ordinary telescope.
Source: Webster’s Unabridged Dictionary 1913 Edition
Word of the Day
17 November 2024
MONASTICISM
(noun) asceticism as a form of religious life; usually conducted in a community under a common rule and characterized by celibacy and poverty and obedience
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