1400-50 for earlier past participle sense; 1655-65 for current senses; late Middle English < Latinconstrūctus (past participle of construere to construe), equivalent to con-con- + strūc- (variant stem of struere to build) + -tus past participle suffix
1660s, from L. construct-, pp. stem of construere "to heap up" (see construction). The noun is recorded from 1871 in linguistics, 1890 in psychology, 1933 in the general sense of "anything constructed." Related: constructed (pp. adj., 1784); constructing (1788).