Meaning of the word deleterious in English

What does deleterious mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

deleterious

US /ˌdel.ɪˈtɪr.i.əs/
UK /ˌdel.ɪˈtɪə.ri.əs/

Adjective

causing harm or damage

Example:
The chemical has a deleterious effect on the environment.
Lack of sleep can have deleterious consequences for your health.