arbitrarily◼◼◼(in an arbitrary manner) adverb [UK: ˈɑː.bɪ.trə.ri.li] [US: ˈɑːr.bə.ˌtre.rə.li]The point at which an embryo becomes a fetus has apparently been chosen arbitrarily. = Le stade auquel un embryon devient un fœtus a apparemment été choisi arbitrairement.