-logue noun combining form or-log\ˌlȯg also ˌläg\ (-s) Etymology: Middle English -loge, -logue, from Old French -logue, from Latin -logus, from Greek -logos, from legein to speak — more at legend 1. a.: discourse, talk < duologue > b.: performance, recital < pianologue > 2.: student, specialist < Sinologue >