pa·ren·the·size \-ˌsīz\verb (-ed/-ing/-s) Etymology:parenthesis + -ize transitive verb 1.: to make a parenthesis of : interject as comment or digression 2.: to insert a parenthesis in : scatter parentheses through < parenthesized his address to the point of incoherence > intransitive verb : to say something in parenthesis