organum/ˈɔː.ɡə.nəm/EtymologyBorrowed from Latin organum, itself a borrowing from Ancient Greek ὄργανον (órganon, “organ, instrument, tool”). Doublet of organ, organon, and orgue.organum means A type of medieval polyphony which builds upon an existing plainsong. Lexicurio rates it Rare gem — a strength score of 74 out of 100.nounA type of medieval polyphony which builds upon an existing plainsong.A method by which philosophical or scientific investigation may be conducted.“He [Francis Bacon] has given us an organum of a different origin and construction from that of Aristotle[…]”