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  1. 4 - Wikipedia

    In internet slang, "4" can replace the word "for" (as "four" and "for" are pronounced similarly). For example, messaging "4 u" instead …

  2. The number four - Britannica

    6 days ago · The number four is a fundamental concept, representing one more than three and the fourth in a series. Culturally, it is …

  3. 8 Fun Facts About the Number 4 - Facts.net

    Oct 19, 2023 · In physics, the four fundamental forces of nature are gravity, electromagnetism, strong nuclear force, and weak …

  4. 4 (number) - New World Encyclopedia

    Four is the second square number (a "square number" is an integer that can be written as the square of some other integer) and the …

  5. About The Number 4 - Numeraly

    Welcome to the About The Number 4 page, where we delve into the fascinating world of this unique and ubiquitous digit. As one of …

  6. Number 4 - Curious Math Facts and Interesting Properties

    Feb 5, 2026 · Explore the hidden properties of 4, an even semiprime number composed of a single prime number multiplied by itself. …

  7. four - Definition, pictures, pronunciation and usage notes | Oxford ...

    Definition of four in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage …

  8. 4 -- from Wolfram MathWorld

    4 days ago · The smallest positive composite number and the first even perfect square. Four is the smallest even number appearing …

  9. FOUR definition and meaning | Collins English Dictionary

    7 meanings: 1. the cardinal number that is the sum of three and one 2. a numeral, 4, IV, etc, representing this number 3..... Click for …

  10. 4 - Wiktionary, the free dictionary

    May 4, 2026 · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ४ (4)), a cursive form of four lines (to …