3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number.

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

THREE definition: a cardinal number, 2 plus 1. See examples of three used in a sentence.

6 senses: 1. the cardinal number that is the sum of two and one and is a prime number. → See also number (sense 1) 2. a.... Click for more definitions.

the cardinal number that is the sum of one and one and one

Three is the first odd prime number, and the second smallest prime. It is both the first Fermat prime (2 2º + 1) and the first Mersenne prime (2² - 1), as well as the first lucky prime.

Mar 29, 2026 · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ३ (3)), from a cursive form of three lines to represent the number three. See 3 § Evolution of the Arabic digit for …

Define three. three synonyms, three pronunciation, three translation, English dictionary definition of three. n. 1. The cardinal number equal to 2 + 1. 2. The third in a set or sequence. 3. Something …

Feb 4, 2025 · From the three musketeers to the three little pigs, the number three pops up everywhere in stories. Learn why this "magic number" holds such power in mythology and folklore.

Feb 5, 2026 · Explore the hidden properties of 3, an odd prime number. Includes Prime Factorization, Divisors, Bases and Fun Facts for students, number lovers and curious minds.