| 释义 | ba·sal I. \ˈbāsəl also -āz-\ adjective
 Etymology: base (I) + -al
 1.  : relating to, situated at, or forming the base; specifically  : radical I 1a(2)
 < basal leaves >
 2.
 a.  : of or relating to the foundation, base, or essence : fundamental, basic, essential
 < basal texts in reading >
 b.  : of, relating to, or essential for maintaining the fundamental vital activities of an organism (as respiration, heartbeat, or excretion) : minimal
 < basal diet >
 — see basal metabolism
 3.  : serving as or serving to induce an initial comatose or unconscious state that forms a basis for further anesthetization
 < basal narcosis >
 < basal anesthetic >
 • ba·sal·ly \-əlē, -əli\ adverb
 II. noun
 (-s)
 : a basal part or structure; especially  : a basal plate of an echinoderm
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