WordWeb Online

1. (botany) 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
    
2. Serving as or forming a base
   "the painter applied a basal coat followed by two finishing coats";
   - base
    
3. Of primary importance
   - primary

See also: basic, essential

Encyclopedia: Basal Basal, Hungary