(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.

plural of zealousness

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.

(management) A budget developed disregarding the expenses or costs of the prior year, requiring explicit justification for all expenditures.

plural of Zealander

A resident or inhabitant of Zealand. / (informal) A resident or inhabitant of New Zealand; a New Zealander.

(law) a witness who has favoritism towards one party in a case.

(computing, informal) The rule that a database, a user interface, etc. should allow for either zero, one, or an indefinite number of an entity.

atmospheric air specially cleaned so that it contains less than 0.1 ppm of hydrocarbon impurities; it then is usable in laboratory procedures such as versions of gas chromatography in which sufficiently pure air may serve as a carrier gas.