n. In grammar and logic, that word or part of a proposition which expresses the relation between the subject and the predicate.n. In an organ, same as coupler.n. In anatomy, some coupling or connecting part, usually distinguished by a qualifying term; especially, a median bone or cartilage connecting hyoidean and branchial arches, and also uniting opposite halves of these arches respectively, as a basibranchial.n. In law, sexual intercourse.n. In botany, same as zygospore.n. In zoology, the cell resulting from the union of a microgamete and a macrogamete among the Sporozoa.n. In chem., one compound substance united with and modifying the character of another. See copulated compound.n. A commissure; the corpus callosum.n. In music, a brief connecting passage, especially between the subject and answer of a fugue. Also called codetta or conduit.n. Same as amboceptor.n. In ichthyology, same as actinost.