Definition of "FSM"

(uncountable, microbiology) Initialism of fluorescent speckle microscopy.

(countable, computing) Initialism of finite-state machine.  examples

(uncountable, Internet slang, dating) Initialism of female seeking male.

(telecommunications) Initialism of field strength meter.  examples

(UK, education) Initialism of free school meals.  examples

Initialism of Flying Spaghetti Monster.  examples

Initialism of Free Speech Movement.  examples