bas·al /ˈbesəl, zəl/
  (a.)基礎的,基本的
  ba·sal /ˈbesəl, zəl/ 形容詞
  基底的,基部的(動)
  Ba·sal a. Relating to, or forming, the base.
  Basal cleavage. See under Cleavage.
  Basal plane Crystallog., a plane parallel to the lateral or horizontal axis.
  ◄ ►
  basal
       adj 1: 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" [syn: radical] [ant: cauline]
       2: serving as or forming a base; "the painter applied a base
          coat followed by two finishing coats" [syn: base]
       3: of primary importance; "basic truths" [syn: basic, primary]