Adding meaning : To join or unite (e.g. one thing to another, or as several particulars) so as to increase the number, augment the quantity or enlarge the magnitude, or so as to form into one aggregate. To sum up; to put together mentally. To combine elements of (something) into one quantity. To give by way of increased possession (to someone); to bestow (on). To append (e,g, a statement); to say further information. To make an addition; to augment; to increase. To perform the arithmetical operation of addition. To summon minions or reinforcements.