(linguistics) An act carried out by speech, such as promising, ordering, greeting, warning, inviting and congratulating.

Third-person singular simple present indicative form of act up

present participle of act up

plural of sexual act

plural of double act

A comic pairing in which humor is derived from the uneven relationship between two partners, usually of the same gender, age, ethnic origin and profession, but often with drastically different personalities or behavior, maybe with a stooge or straight man.

(genetics) Describing transcription factors that regulate the expression of genes on a different chromosome.

(genetics) Describing transcription factors that regulate the expression of genes on the same chromosome.

plural of Act of God

(law) The doctrine, in European law, that cases involving a law with a reasonably obvious interpretation do not need to be referred to the European Court of Justice.