A bird of paradise (Semioptera wallacii) which has two long special feathers standing erect on each wing.

(particle physics) A theory about the electromagnetic, weak, and strong nuclear interactions that mediate the dynamics of the known subatomic particles.

(topology) The topology of the real number system generated by a basis which consists of all open balls (in the real number system), which are defined in terms of the one-dimensional Euclidean metric.

Alternative form of standardlike

An organization such as ANSI, ISO or DIN, whose primary activities are developing, coordinating, promulgating, revising, amending, reissuing, interpreting, or otherwise producing technical standards.

(US, law) A rule of evidence regarding the admissibility of expert witnesses' testimony during federal legal proceedings, and based (among other factors) on the use of the scientific method.

(navigation) A port whose tidal predictions are given directly in tide tables

The mean absolute deviation. / A commonly accepted standard or value.

A London-based form of English that became widespread after the Middle English period, aided by the introduction of the printing press.

plural of standard of living