1540s, "collection of set forms," from French formulaire "collection of formulae," from noun use of Latin adjective formularius, from formula "a form" (see formula). As an adjective in English, "of the nature of a formula," 1728. The Latin adjective also was used as a noun meaning "a lawyer skilled in composing writs."
Formosa
formula
formulae
formulaic
formular
formulary
formulate
formulation
Fornax
fornicate
fornication