Webster’s Revised Unabridged Dictionary · 1913
Convertend
Con′ver·tend′ (kŏn′vẽr·tĕnd′), n. [L. convertenus to be converted.] (Logic) Any proposition which is subject to the process of conversion; — so called in its relation to itself as converted, after which process it is termed the converse. See Converse, n. (Logic).