(physics) associated with zero on any scale, but particularly with a temperature of absolute zero

A vehicle that produces only carbon dioxide and water as its emissions and so does not pollute the air.

The state of apparent weightlessness which occurs in a very low gravity field, or in free fall.

(surveying) An optimal network design within a computer. It involves choosing an optimal reference system and revolving it around a certain real number.

plural of zero-point energy

(logic) Describing situations in which the veracity of a statement may be shown to be true without revealing any other information.

(cryptography) An interactive method for one party to prove to another that a (usually mathematical) statement is true, without revealing anything other than the veracity of the statement.

(US) The smallest size of women's clothing / (informal) A woman with a very low body mass index, especially such a fashion model

(mathematics, informal) Bijective numeration in base ten.

A tensor with all entries equal to zero; where any pattern of covariant and contravariant indices have all components equal to 0. / A generalization of the zero vector to tensor space.