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octodecimo plural

oc·to·dec·i·mo

The plural form of octodecimo is octodecimos

O o

Definitions

  • noun plural octodecimo a book size of about 4 × 6 1/4 inches (10 × 16 cm), determined by printing on sheets folded to form 18 leaves or 36 pages. Symbol: 18mo, 18°. 1
  • noun plural octodecimo a book of this size. 1
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