An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Containing nothing; having none of the usual or appropriate contents (Dictionary.com).

M.E., from O.E. æmettig "vacant, not occupied," from æmetta "a leisure," from æ "not" + -metta, from motan "to have."

Tohi "empty," → void.

In → graph theory, a graph with any number of → vertices which do not have → edges.

→ empty; → graph.

A set containing no → elements.

→ empty; → set.

A → cosmological model based on → Einstein's field equations in which the → Universe is devoid of → matter and → radiation. There are two types of empty Universes: the → de Sitter Universe and the → Milne Universe.

→ empty; → Universe.

Describing something that is partially or totally occupied.

→ non; → empty.

A set containing at least → one → element.

→ nonempty; → set.