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.
Why is the San Francisco football team called the 49ers?When the California Gold Rush began in 1848, American football didn’t exist. But those aggressive gold miners would give their nickname to a football team one hundred years later. Gold was first found in Northern California in January 1848, and it took about a year for the news to travel and inspire thousands of fortune seekers to head west. The miners who arrived in 1849 …
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- forty hours,
- forty winks,
Origin of forty-eightmo
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019