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Definition of Deleterious
1. Adjective. Harmful to living things. "Deleterious chemical additives"
Definition of Deleterious
1. a. Hurtful; noxious; destructive; pernicious; as, a deleterious plant or quality; a deleterious example.
Definition of Deleterious
1. Adjective. harmful often in a subtle or unexpected way (as for example ''deleterious'' effects, ''deleterious'' to health). ¹
¹ Source: wiktionary.com
Definition of Deleterious
1. [adj]
Medical Definition of Deleterious
1. Hurtful; noxious; destructive; pernicious; as, a deleterious plant or quality; a deleterious example. Delete"riously, Delete"riousness. Origin: LL. Deleterius noxious, Gr, fr. To hurt, damage; prob. Akin to L. Delere to destroy. Source: Websters Dictionary (01 Mar 1998)