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Definition of 18
1. Noun. The cardinal number that is the sum of seventeen and one.
2. Adjective. Being one more than seventeen.
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 |