‖n. [ Coined by logicians. ] (Logic) The first word in certain mnemonic lines which represent the various forms of the syllogism. It indicates a syllogism whose three propositions are universal affirmatives. Whately. [ 1913 Webster ]
a. [ From NL. rhabarbarum, an old name of rhubarb. See Rhubarb. ] Impregnated or tinctured with rhubarb. Floyer. [ 1913 Webster ]