Webster’s Revised Unabridged Dictionary · 1913
Trigesimo-secundo
Tri·ges′i·mo-se·cun′do, a. [L. in trigesimo-secundo in the thirty-second.] Having thirty-two leaves to a sheet; as, a trigesimo-secundo form, book, leaf, size, etc.
Tri·ges′i·mo-se·cun′do, n. A book composed of sheets so folded that each one makes thirty-two leaves; hence, indicating, more or less definitely, a size of book; — usually written 32mo, or 32°, and called thirty-twomo.