adj. & n.
adj. opposite, contrary, reversed.
n. 1 something that is opposite or contrary. 2 a statement formed from another statement by the transposition of certain words, e.g. some philosophers are men from some men are philosophers. 3 Math. a theorem whose hypothesis and conclusion are the conclusion and hypothesis of another. conversely adv.
[ L conversus, past part. of convertere (CONVERT) ]