sixteenmo

noun
six·​teen·​mo | \ sik-ˈstēn-(ˌ)mō How to pronounce sixteenmo (audio) \
plural sixteenmos

Definition of sixteenmo

: the size of a piece of paper cut 16 from a sheet also : a book, a page, or paper of this size

First Known Use of sixteenmo

1847, in the meaning defined above

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