| Adj. | 1. | basal - especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem; "basal placentation"; "radical leaves" |
| 2. | basal - serving as or forming a base; "the painter applied a base coat followed by two finishing coats"basic - pertaining to or constituting a base or basis; "a basic fact"; "the basic ingredients"; "basic changes in public opinion occur because of changes in priorities" | |
| 3. | basal - of primary importance essential - basic and fundamental; "the essential feature" |