PLEXUS Meaning of PLEXUS in English n. (pl. same or plexuses) 1. Anat. a network of nerves or vessels in an animal body (gastric plexus). 2 any network or weblike formation. Derivatives: plexiform adj. Etymology: L f. plectere plex- plait Oxford English vocab. Оксфордский английский словарь. 2012