The meaning of CONSTANT is continually occurring or recurring : regular. How to use constant in a sentence. Synonym Discussion of Constant.

CONSTANT definition: not changing or varying; uniform; regular; invariable. See examples of constant used in a sentence.

The mathematical constant pi represents the ratio of a circle's circumference to its diameter. We assume that the demand rate is known and is a constant.

If an amount or level is constant, it stays the same over a particular period of time. The average speed of the winds remained constant.

1. 'constant' You describe something as constant when it happens all the time or never goes away. He was in constant pain. I'm getting tired of Eva's constant criticism.

Definition of constant adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

something that does not change or vary: The speed of light was postulated as a constant. con•stant•ly, adv. See -stan-. invariable: All conditions during the three experiments were constant. unceasing: …