Longman Dictionary of Contemporary English
Wiktionary
n. (alternative form of equal sign English)
WordNet
n. a sign indicating that the quantities on either side are equal
Wikipedia
The equals sign or equality sign (=) is a mathematical symbol used to indicate equality. It was invented in 1557 by Robert Recorde. In an equation, the equals sign is placed between two expressions that have the same value. In Unicode and ASCII, it is .
Usage examples of "equals sign".
On the left of the equals sign there is anxiety generated by the 'knowledge' that your wife intends to do away with you.
I was like an equals sign through which the algebraic swarm of humanity was passing.
I was a rather important, active equals sign, like a general in time of war, but no matter how competent I were to become I could never change into a plus or a minus sign.
She prayed that whatever it was would be on her side of the equals sign.