(travel industry, aviation) (Formerly, no longer in use) An IATA defined amount used to adjust Fare Construction Units in international airfare calculations.

(medicine, biochemistry) Any of several polypeptide hormones, produced by macrophages, that can destroy some cancer cells.

The collective feeling of well-being (or otherwise) of an electorate, a high one supposedly favouring the incumbent party in an election.

An indication of how long a sunscreen remains effective when applied to the skin.

(aviation) The load factor necessary for an airline to break even. It is a function of the percent of seats filled at a particular yield versus the airlines operating costs.

(fluid mechanics) A dimensionless friction factor relating the head loss over a pipe to the lengthscale of the pipe and the fluid velocity.

Alternative form of greatest common divisor

Alternative form of greatest common divisor

A canary of a breed with reddish-orange plumage.

plural of red factor canary