A species of falcon endemic to New Zealand, Falco novaeseelandiae.

(mathematics) A type of potential counterexample to the generalized Riemann hypothesis, on the zeros of Dirichlet L-function.

(organic chemistry) A particular carotenoid.

(mathematics) A matrix whose entries are all zero.

plural of New Zealand pigeon

A large species of pigeon, Hemiphaga novaeseelandiae, native to New Zealand.

plural of zero hour

(UK) A contract of employment that creates an on-call arrangement in which the employee agrees to be available for work as and when required, without any particular number of hours or times of work being specified or guaranteed.

Alternative spelling of zero-grade

A small stylized Japanese rock garden, intended to convey the essence of nature and to aid meditation.