Definition of 18

1. Noun. The cardinal number that is the sum of seventeen and one.

Exact synonyms: Eighteen, Xviii
Generic synonyms: Large Integer

2. Adjective. Being one more than seventeen.
Exact synonyms: Eighteen, Xviii
Similar to: Cardinal

Lexicographical Neighbors of 18

16th
16 PF
17
170
170th
1728
175
1750s
175th
1760s
1770s
1780s
1790s
17th
17 November
18 (current term)
180
180th
1820s
1830s
1840s
1850s
1860s
1870s
1880s
1890s
18th
19
190
1900s

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