transitive. To calculate by addition the sum or total amount of (two or more numbers or quantities); to add up.

transitive. Mathematics. To subject (a number) to any of various arithmetical operations; esp. †to add (to, together) (obsolete); †to subtract (out of…

transitive. To place in juxtaposition; to add together; †to compare; †to put together, construct; †passive to be composed of.

transitive. To put together (two or more numbers or amounts) to calculate their total amount, to unite into one sum (also with together); to unite…

transitive. To add up (a column of numbers, or an account, bill, etc., having this) and enter the sum at the bottom; to reckon, calculate, add up…

transitive. To bring together, gather, collect; to add together. Obsolete.

transitive. To find the sum of (a column or series of numbers, a number of things, etc.).

transitive. To bring to a total, add up, complete. Also (U.S.) with out.

transitive. Mathematics. Occasionally with up. To calculate the sum (in various senses) of (an infinite series). See sum, n.1 5b.

transitive. To add together and bring out the total of; to sum up.

transitive. To add up (a column of figures, etc.) rapidly; (occasionally more generally) to make a rapid assessment of.

transitive. To combine (two or more things) together, esp. so as to produce a cumulative effect, force, etc. Also intransitive.