- The definition of detrimental is something that is harmful.
An example of detrimental is smoking cigarettes.
Smoking is detrimental to your health.
detrimental definition by Webster's New World
causing detriment; harmful
Origin: see detriment
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- detrimentally adverb
detrimental definition by American Heritage Dictionary
Causing damage or harm; injurious.
- detˌri·menˈtal·ly adverb