IPA: /tɒkˈsɪdʒənɪk/
KK: /tɑkˈsɪdʒɪnɪk/
Relating to or capable of producing toxins or poisons.
Certain bacteria are toxigenic and can cause serious illnesses.
Toxigenic is formed from "toxi-" (from Greek "toxikon", meaning poison) and "genic" (from Greek "genes", meaning producing or generating). The word describes something that produces or generates poison.
Think of 'toxin' as poison and 'genic' as producing — so toxigenic refers to something that produces poison.