The meaning of and is —used as a function word to indicate connection or addition especially of items within the same class or type—used to join sentence elements of the same grammatical rank or.. A logical operator that returns a true value only if both operands are true.
As well as the familiar equals sign (=) it is also very useful to show if something is not equal to (≠) greater than (〉) or less than (〈).. Definition of and conjunction in oxford advanced american dictionary.