Definitions for: Eighteen

[n] the cardinal number that is the sum of seventeen and one
[adj] being one more than seventeen

Webster (1913) Definition: Eight"een`, a. [AS. eahtat?ne, eahtat?ne. See
Eight, and Ten, and cf. Eighty.]
Eight and ten; as, eighteen pounds.

Eight"een`, n.
1. The number greater by a unit than seventeen; eighteen
units or objects.

2. A symbol denoting eighteen units, as 18 or xviii.

Synonyms: 18, 18, cardinal, xviii, XVIII

See Also: large integer