# Sq

**SQL**- Abbreviation of Structured Query Language.
**Square**- A number raised to the power 2 ie 2 x 2 = 2
^{2} = 4. Also, a 2 dimensional figure with the height and width having the same lengths,and at right angles to each other. **Square Feet**- Imperial unit of area.
**Square Free**- An integer is said to be square free if it is not divisible by a perfect square, n
^{2}, for n>1. **Square Metre**- The derived SI unit of area.
**Square Mil**- The area of a square, the sides of which are each equal to 1 mil.
**Square Number**- A number of the form n
^{2}. **Square Nut**- A square nut.
**Square Root**- The square root of a number is a number that when multiplied by itself equals the number that the square root is being taken of.
**Square Root of 2**- 1.4142……
**Square Root of Negative One**- The square root of -1 is i.
**Square Surface**- A surface at a right angle with another surface.
**Square Wave**- A periodic wave that alternately assumes one of two fixed values (high and low)
with the transition time between these two levels being negligible.
**Squeak**- A sound resembling that of an unlubricated hinge.
**Squeeze Clamps**- Light duty clamps applied with one hand with an automatic advancing squeeze handle.
**Squelch**- A circuit that cuts off the output of a receiver when there is no input.
**Squirrel Cage Windings**- A type of rotor winding in which heavy conductors are embedded in the rotor body.
**Squish**- Action of forcing pockets of air within the combustion chamber back towards the spark plug for better fuel distribution.