Transit
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Transit
</dt>
1. The passage of a celestial
body across a celestial
meridian, usually called meridian transit.
</dd>
2. The apparent passage of a celestial body across the face of another
celestial body or across any point, area, or line.
</dd>
3. An instrument used by an astronomer to determine the exact instant of
meridian transit of a celestial body.
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4. A reversing instrument used by surveyors for accurately measuring
horizontal and vertical angles; a theodolite which can be reversed in its
supports without being lifted from them. [[/a>|/a>
]]
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use