thirty

Noun · Adjective
US[thur-dee]/ˈθɝˌdi/2 syllablesalso [thur-tee] /ˈθɝˌti/
Synonyms: 30XXXxxx

Open English WordNet

Adjective (1)

  1. being ten more than twentySynonyms: 30xxxOpposite ordinalSimilar cardinal

Noun (1)thirties

  1. the cardinal number that is the product of ten and threeSynonyms: 30XXXType of large integer
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onerousadjective

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Webster's Dictionary (1913)

Thir′ty adjective

Origin: OE. thritty, AS. þrītig, þrittig; akin to D. dertig, G. dreissig, Icel. þrjātīu, þrjātigi, þrir teger, Goth. þreis tigjus, i.e., three tens. See Three, and Ten, and cf. Thirteen.

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 noun; 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.

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54

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