noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A paper size, (2.5"–3.3" x 5"–6.25"), one twenty-fourth of a standard uncut flat sheet.
2. 2
   A book size, (2.5"–3.3" x 5"–6.25"), corresponding to the paper size.

Synonyms

All synonyms

24mo24ºtwenty-fourmot

Etymology

From Latin ablatives of vīcēsimus (“twentieth”) and quartus (“fourth”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.