| BIOTOXIN | • biotoxin n. Any toxin produced by a living organism. • BIOTOXIN n. a poison of biological origin. |
| EXOMIONS | • EXOMION n. a Roman sleeveless garment, also EXOMIS. |
| EXOTOXIN | • exotoxin n. Any toxin secreted by a microorganism into the surrounding environment. • EXOTOXIN n. a secreted toxin. |
| MONOXIDE | • monoxide n. (Chemistry) any oxide containing a single oxygen atom in each molecule or formula unit. • MONOXIDE n. an oxide containing one atom of oxygen in the molecule or empirical formula. |
| 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. |
| OXONIUMS | • oxoniums n. Plural of oxonium. • OXONIUM n. a certain grouping of oxygen and hydrogen atoms. |
| OXYANION | • oxyanion n. (Chemistry) Any anion derived from an oxyacid. • OXYANION n. an anion containing one or more oxygen atoms bonded to another element (as in the sulphate and carbonate ions). |
| 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. |
| OXYTONIC | • oxytonic adj. (Prosody) Having a stress on the last syllable. • OXYTONIC adj. like an oxytone. |
| ZOOTOXIN | • zootoxin n. A toxin produced by an animal. • ZOOTOXIN n. a toxin produced by an animal. |