to express in precise form; state definitely or systematically

He finds it extremely difficult to formulate his new theory.

to devise or develop, as a method, system, etc.

to reduce to or express in a formula.

verb

codify , coin , compose , concoct , contrive , cook up , couch , define , detail , develop , devise , draft , draw up * , dream up * , evolve , express , forge , frame , give form to , hatch , indite , invent , make , make up * , map , originate , particularize , phrase , prepare , put , set down * , systematize , vamp , work , work out , word , draw up , blueprint , cast , chart , conceive , lay , plan , project , scheme , strategize , dream up , fabricate , make up , think up , state