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

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

plural of Darcy friction factor

Alternative form of greatest common divisor

plural of highest common factor

Alternative form of greatest common divisor

plural of greatest common factor

A canary of a breed with reddish-orange plumage.

plural of red factor canary

(colloquial, humorous) I don't care; I have no interest in that.