The number of days in the months April, June, September and November (and in unusual circumstances February—see February 30). Although the number of days in a month vary, 30 is used to estimate …

Welcome to the most comprehensive review of the number 30 ever created. The number 30 possesses remarkable attributes, including–and perhaps most profoundly–its role (along with its prime factors 2, …

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

Define 30. 30 synonyms, 30 pronunciation, 30 translation, English dictionary definition of 30. Noun 1. 30 - the cardinal number that is the product of ten and three thirty, XXX large integer - an integer equal …

"30." Vocabulary.com Dictionary, Vocabulary.com, https://www.vocabulary.com/dictionary/30. Accessed 03 Mar. 2026. loading examples...

Dec 11, 2025 · The cardinal number thirty. (telecommunications) end of message.

It is the number between twenty-nine and thirty-one. In roman numerals it is XXX.

Look up 30 in Wiktionary, the free dictionary.

1 day ago · Spoiler alert! Night 2 of “Hollywood Week: Music City Takeover” saw judges Carrie Underwood, Lionel Richie and Luke Bryan select the ‘American Idol’ 2026 Top 30.

"American Idol" wrapped Hollywood Week by reducing nearly 100 contestants. Here's who made it into the Top 30 and who were left out.