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converse1
—converser, n.v. /keuhn verrs"/; n. /kon"verrs/, v., conversed, conversing, n.v.i.1. to talk informally with another or others; exchange views, opinions, etc., by talking.2. Archaic. to maintain a familiar association (usually fol. by with).3. Obs. to have sexual intercourse (usually fol. by with).n.4. familiar discourse or talk; conversation.[1300-50; ME conversen < MF converser < L conversari to associate with. See CON-, VERSE]converse2—conversely /keuhn verrs"lee, kon"verrs-/, adv.adj. /keuhn verrs", kon"verrs/; n. /kon"verrs/, adj.1. opposite or contrary in direction, action, sequence, etc.; turned around.n.2. something opposite or contrary.3. Logic.a. a proposition obtained from another proposition by conversion.b. the relation between two terms, one of which is related to the other in a given manner, as "younger than" to "older than."4. a group of words correlative with a preceding group but having a significant pair of terms interchanged, as "hot in winter but cold in summer" and "cold in winter but hot in summer."[1350-1400; ME convers ( < AF) < L conversus ptp. of convertere to turn around, equiv. to con- CON- + vert- turn + -tus ptp. suffix; see CONVERT]
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▪ logicin logic, the proposition resulting from an interchange of subject and predicate with each other. Thus, the converse of “No man is a pencil” is “No pencil is a man.” In traditional syllogistics, generally only E (universal negative) and I (particular affirmative) propositions yield a valid converse. The converse of a relation R is the relation S such that xSy (y has the relation S to x) if, and only if, yRx (x has the relation R to y). If a relation is identical to its converse, it is symmetric.* * *
Universalium. 2010.
