1. The act of conjugating. 2. The state of being conjugated. 3. The inflection of a particular verb. 4. A presentation of the complete set of inflected forms of a verb. 5. A class of verbs having similar inflected forms. 6. The temporary union of two bacterial cells during which one cell transfers part or all of its genome to the other. 7. A process of sexual reproduction in which ciliate protozoans of the same species temporarily couple and exchange genetic material. 8. A process of sexual reproduction in certain algae and fungi in which temporary or permanent fusion occurs, resulting in the union of the male and female gametes.