orīgō inis, f orior, a beginning, commencement, source, start, descent, lineage, birth, origin: originem rerum quaerere: tyranni: principii nulla est origo, nam e principio oriuntur omnia: ab origine gentem (conripiunt morbi), V.: fontium qui celat origines Nilus, source, H.: Auctore ab illo ducis originem, are descended from, H.: Mentis malae est origo penes te, Iu.

—Plur. (as a title), a work by Cato upon the early history of the Italian cities, C., N.

—A race, stock, family: Ille tamen nostrā deducit origine nomen, V.: ab origine ultimā stirpis Romanae generatus, one of the oldest families, N.

—An ancestor, progenitor, founder: Aeneas, Romanae stirpis origo, V.: gentis, Ta.: mundi melioris origo, creator, O.: (urbes) . . . pars originibus suis praesidio fuere, their mother-cities, S.