(uncountable, microbiology) Initialism of fluorescent speckle microscopy. / (countable, computing) Initialism of finite-state machine.

(UK, education) Initialism of free school meals.

Initialism of Flying Spaghetti Monster. / Initialism of Free Speech Movement.

plural of FSM

(slang, humorous) A sarcastic assertion that something that has not been satisfactorily explained by science is therefore evidence of the Flying Spaghetti Monster.

(UK, law) Acronym of Financial Services and Markets Act 2000.