The point of an orbit, as of the moon or a planet, at which it is in conjunction or opposition; -- commonly used in the plural.
- Astronomy Either of two points in the orbit of a celestial body where the body is in opposition to or in conjunction with the sun.
- Astronomy Either of two points in the orbit of the moon when the moon lies in a straight line with the sun and Earth.
- Astronomy The configuration of the sun, the moon, and Earth lying in a straight line.
- The combining of two feet into a single metrical unit in classical prosody.