"Mǔ jiàn" (mother ship) is a compound noun formed from 母 (mǔ), meaning "mother" or "parent," and 舰 (jiàn), meaning "warship" or "vessel." Literally, it refers to a large, central ship that serves as a base, support platform, or command center for smaller vessels, aircraft, drones, or submarines. It does not imply biological motherhood but rather a hierarchical, functional relationship—like a 'parent' vessel that deploys, recovers, supplies, or coordinates subordinate units.

The term is widely used in military, naval, aerospace, and science fiction contexts. In real-world usage, it describes aircraft carriers, submarine tenders, or space mission command modules. In sci-fi, it often denotes massive alien or futuristic spacecraft that launch fighters or serve as mobile bases. While technically neutral, it carries connotations of scale, authority, and logistical centrality—not mere size, but operational dominance.