The meaning of THIRTY is a number equal to three times 10. How to use thirty in a sentence.

SMART Vocabulary: related words and phrases (Definition of thirty from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Thirty definition: a cardinal number, 10 times 3.. See examples of THIRTY used in a sentence.

2. (also adjective) the last of thirty (people, things etc); the next after the twenty-ninth.

Definition of thirty in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

30 is an even, composite, and pronic number. With 2, 3, and 5 as its prime factors, it is a regular number and the first sphenic number, the smallest of the form , where r is a prime greater than 3.

When you talk about the thirties, you are referring to numbers between 30 and 39. For example, if you are in your thirties, you are aged between 30 and 39. If the temperature is in the thirties, …

Sep 23, 2025 · thirty (plural thirties) (slang) A rack of thirty beers. […] instead of thirties [thirty-second commercials], they buy sixties, which cost twice as much. They spend more on filming …

Jul 16, 2025 · Uncover the full scope of "thirty." This glossary entry provides a comprehensive definition, historical etymology, real-world examples across various contexts, and common …

The word 'thirty' originated from Old English 'þrītig', which is a combination of 'þrīe' (three) and '-tig' (group of ten). The concept of thirty has been significant in various cultures and societies …