The position of a planet when it is on the opposite side of the Sun from Earth (thus making in invisible).

Position of a superior planet, as viewed from Earth, when it is in the same direction as the Sun and farthest from Earth.

(astronomy) the alignment of the Earth and a planet on the opposite side of the sun

The conjunction of Venus and Mercury when they are more distant than the Sun. (See diagram.)

The place in which a planet whose orbit is inside that of the Earth, passes on the far side of the Sun with respect to the Earth

See conjunction.

An alignment of the Sun and any two planets such that an observer on one planet sees the Sun between himself and the other planet. For example, Venus is at superior conjunction when it lies on the other side of the Sun from the Earth.

The position of a planet when it is on the far side of the Sun (and in conjunction with the Sun).

Alignment between Earth and a planet on the far side of the Sun.

This is when Mercury, or Venus, are behind the Sun.

the configuration of an inferior planet when it lies on the far side of the sun

A conjunction that occurs when a superior planet passes behind the Sun and is on the opposite side of the Sun from the Earth.

The point at which, as observed from some planet, another planet passes directly behind the Sun. In the case of superior planets, this point is usually just called "conjunction".