You searched for: “proper
Word Entries containing the term: “proper
proper fraction
A fraction in which the numerator is smaller than the denominator.
This entry is located in the following unit: Measurements and Mathematics Terms (page 8)
proper motion (s) (noun), proper motions (pl)
The movement of a star in the celestial sphere which is more noticeable in near stars than in distant stars; in practice, the movement of the latter is negligible: The proper motion of a star is due to the object's velocity relative to the Sun.
This entry is located in the following unit: Astronomy and related astronomical terms (page 20)