Definify.com

Webster 1913 Edition

Adj.

[Gr.

πάθοσ

disease + the root of

γένοσ

birth.]

(Med. & Biol.)

Of or pertaining to pathogeny; producting disease;

as, a

pathogenic

organism; a

pathogenic

bacterium.

pathogenic ‎(comparative more pathogenic, superlative most pathogenic)

(pathology) Able to cause (harmful) disease.
While the environment is teeming with bacteria and fungi, most are not pathogenic.
(music) Consisting of harsh, percussive, nonverbal sounds

able to cause disease