Definition from Wiktionary, the free dictionary
- Relating to, or forming, the base, or point of origin.
- (chiefly systematics) In a phylogenetic tree, being a group, or member of a group, which diverged earlier.
- Hittite is a basal Indo-European language.
- A magnolia is a basal angiosperm.
relating to, or forming, the base, or point of origin
basal (plural basals)
- (anatomy) Any basal structure or part