Approximately four weeks (4 times 7 days) to a lunar month (synodic month = 29.54 days). Thus the number four is universally an integral part of primitive sacred calendars.

FOUR meaning: 1 : the number 4; 2 : the fourth in a set or series

The meaning of FOUR is a number that is one more than three. How to use four in a sentence.

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 second centered triangular number.

Dec 9, 2025 · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ४ (4)), a cursive form of four lines (to represent the number four) arranged in the shape of a cross …

Noun 1. 4 - the cardinal number that is the sum of three and one IV, Little Joe, quadruplet, quartet, quatern, four, quaternion, quaternity, tetrad,...

4 Add to list Definitions of 4 noun the cardinal number that is the sum of three and one