The location of a radio transmitter by taking bearings from two receivers. / The location of a vessel or aircraft by taking bearings to two transmitters of known position.

(mathematics) A set which is unchanged by a function or other mapping. Formally: a set, S, is a fixed set of a function, f, if and only if for all x in S, f(x)=x.

A hard disk

(art) A series of presentations and/or performances, discussions or similar events that happen on a fixed day every month (or similar; for example "every second Sunday of a month"). Used mainly by cultural and artistic organizations.

Of a plant, microbe, etc., able to convert inorganic nitrogen into a form usable in the biosphere.

(Christianity) an annual celebration that is held on the same calendar date every year, such as Christmas (December 25)

(computing) A fractional-number representation with a fixed number of digits after the decimal point. Compare floating point and integer.

(computing) Pertaining to fixed point representations or operations.

(informal, transitive, intransitive) To provide (someone) with something; to furnish.

(chemistry, now historical) Carbon dioxide; carbonic acid.