forty-eightmo

[fawr-tee-eyt-moh]

noun, plural for·ty-eight·mos for 2.

a book size of about 2½ × 4 inches (6 × 10 cm), determined by printing on sheets folded to form 48 leaves or 96 pages. Abbreviation: 48mo, 48°
a book of this size.

adjective

in forty-eightmo.

Nearby words

  1. forty,
  2. forty hours,
  3. forty winks,
  4. forty-eight,
  5. forty-eighth,
  6. forty-fifth,
  7. forty-first,
  8. forty-five,
  9. forty-four,
  10. forty-fourth

Origin of forty-eightmo

First recorded in 1885–90; forty-eight + -mo

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019