(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.

(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.

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

(law) In antitrust law, collusion between competitors in order to raise prices, at the expense of the consumer.

(psychology) An idea dominating the mind and maintained despite evidence to the contrary; (loosely), an obsession. / A recurring musical theme; a leitmotif.

Reasonably financially secure.

plural of fixed cost

plural of fixed asset