Meaning

noun a relation that provides the foundation for something

noun the fundamental assumptions from which something is begun or developed or calculated or explained

noun the most important or necessary part of something

originFrom Latin basis, from Ancient Greek βάσις (básis), from Proto-Indo-European *gʷémtis, derived from Proto-Indo-European *gʷem- (whence also come). Doublet of base.

Etymology from Wiktionary, CC BY-SA 3.0