| BIOTOXIN | • biotoxin n. Any toxin produced by a living organism. • BIOTOXIN n. a poison of biological origin.
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| ECOTOXIC | • ecotoxic adj. Exhibiting ecotoxicity. • ECOTOXIC adj. poisonous to flora and fauna.
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| EXOTOXIC | • exotoxic adj. Of, related to, or caused by an exotoxin. • EXOTOXIC adj. relating to an exotoxin, an excreted toxin.
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| EXOTOXIN | • exotoxin n. Any toxin secreted by a microorganism into the surrounding environment. • EXOTOXIN n. a secreted toxin.
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| NEOTOXIN | • NEOTOXIN n. any harmful substance in the environment causing illness or allergy. | 
| NONTOXIC | • nontoxic adj. Not toxic; not poisonous. • nontoxic n. A substance that is not toxic.
 • non-toxic adj. Alternative form of nontoxic.
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| OTOTOXIC | • ototoxic adj. Causing ototoxicity. • OTOTOXIC adj. adversely affecting hearing or balance.
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| OXYTOCIC | • oxytocic adj. (Medicine) Serving to promote uterine contractions, thus accelerating childbirth. • oxytocic n. An oxytocic drug.
 • OXYTOCIC n. a drug that hastens childbirth.
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| OXYTOCIN | • oxytocin n. (Biochemistry) A hormone that stimulates contractions during labor, and then the production of milk;… • OXYTOCIN n. a pituitary hormone that stimulates uterine muscle contraction.
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| OXYTONIC | • oxytonic adj. (Prosody) Having a stress on the last syllable. • OXYTONIC adj. like an oxytone.
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| PROTOXID | • protoxid n. Archaic form of protoxide. • PROTOXID n. that one of a series of oxides having the lowest proportion of oxygen, also PROTOXIDE.
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| ZOOTOXIC | • zootoxic adj. Of or pertaining to zootoxins. • ZOOTOXIC adj. relating to a zootoxin, a poison derived from an animal.
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| ZOOTOXIN | • zootoxin n. A toxin produced by an animal. • ZOOTOXIN n. a toxin produced by an animal.
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