arithmetic progression
a sequence of numbers or quantities, each term of which differs from the succeeding term by a constant amount, such as 3,6,9,12
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
arithmetic progression
[¦a·rith¦med·ik prə′gresh·ən] (mathematics)
A sequence of numbers for which there is a constant d such that the difference between any two successive terms is equal to d. Also known as arithmetic sequence.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.