Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English
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-mo

Book sizes.

[The final syllable of the masculine ablative singular of Latin ordinal numbers.]

Book sizes are determined by the number of leaves into which a sheet of paper has been folded. Older examples are formed on Latin ordinal numbers, such as duodecimo (Latin in duodecimo, in a twelfth, from duodecimus, twelfth), a size of book in which each leaf is one twelfth of the size of the printing sheet. More recently, equivalent terms have been formed using English cardinal numbers: twelvemo, sixteenmo, thirty-two-mo.

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