(mathematics) The number which, when squared, yields another number. / (mathematics) The positive number which, when squared, yields another number; the principal square root.

A unit of area (abbreviation sq yd or sq. yd.) equal to the area of a square the sides of which are one yard long (i.e. 3 feet by 3 feet or 9 square feet).

A unit of area (abbreviation sq mi or sq. mi. or mi²) equal to the area of a square the sides of which are each one mile long.

A unit of area equal to the area of a square the sides of which are each one inch long.

A unit of area equal to the area of a square whose sides are one foot long.

A type of dance in which eight dancers are arranged in a square as four couples, with a caller calling or singing out the movements that the dancers are to perform.

plural of square sail

(nautical) A sail bent to a horizontal yard set athwartships.

(genetics) A graphical representation used to determine the probability of an offspring expressing a particular genotype.

plural of Punnett square