THIRTY

thirty, xxx

(adjective) being ten more than twenty

thirty, XXX

(noun) the cardinal number that is the product of ten and three

Source: WordNet® 3.1

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Etymology

Numeral

thirty

The cardinal number occurring after twenty-nine and before thirty-one, represented in Arabic numerals as 30.

Noun

thirty (plural thirties)

(slang) A rack of thirty beers.

Source: Wiktionary

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Thir"ty, a. Etym: [OE. thritty, AS. Þritig, Þrittig; akin to D. dertig, G. dreissig, Icel. Þrjatiu, Þrjatigi, Þrir teger, Goth. Þreis tigjus, i.e., three tens. See Three, and Ten, and cf. Thirteen.]

Definition: Being three times ten; consisting of one more than twenty-nine; twenty and ten; as, the month of June consists of thirty days.

Thir"ty, n.; pl. Thirties (.

1. The sum of three tens, or twenty and ten; thirty units or objects.

2. A symbol expressing thirty, as 30, or XXX.

Source: Webster’s Unabridged Dictionary 1913 Edition

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