18 Definition

symbol

The number eighteen.

Wiktionary
noun

(paper) Abbreviation of octodecimo, a page size (3.5"-4.5" x 4.9"-5.9").

Wiktionary

(printing) Abbreviation of octodecimo, a book size using octodecimo-sized pages.

Wiktionary
Synonyms:
xviiieighteen

Words Near 18 in the Dictionary