(informal) Alternative form of nuclear power plant

(now rare) A drink made from the plantain plant.

(astronomy) The orbital plane passing through a planetary system's barycenter (center of mass) perpendicular to its angular momentum vector.

(astronomy) The plane that passes through the Earth's equator, or by extension the equators of other celestial bodies.

(astronomy) The ecliptic, the plane of the Earth's orbit around the Sun, or by extension the orbital planes of other celestial bodies.

A power plant that uses both natural gas and steam to have higher efficiency of power generation from the same amount of fuel.

Alternative form of pieplant

the infrastructure and buildings used in the operation of a given facility

(colloquial) Short for physical plant.

A mirror with a flat surface (i.e. the surface is a single plane)