Definition of sextodecimo in English:

sextodecimo

(also 16mo)

noun

  • 1A size of book page that results from folding each printed sheet into sixteen leaves (thirty-two pages).

    1. 1.1 A book of sextodecimo size.

Origin

Late 17th century: from Latin sexto decimo, ablative of sextus decimus sixteenth.

Pronunciation

sextodecimo

/ˌsɛkstə(ʊ)ˈdɛsɪməʊ/