Grammar A presentation of the complete set of inflected forms of a verb.
Grammar A class of verbs having similar inflected forms.
Biology The temporary union of two bacterial cells during which one cell transfers part or all of its genome to the other.
Biology A process of sexual reproduction in which ciliate protozoans of the same species temporarily couple and exchange genetic material.
Biology 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.