资料来源 : pyDict

喷火口状的,漏斗状的,似火山口的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Crateriform \Cra*ter"i*form\ (kr?-t?r"?-f?rm), a. [L. cratera +
   -form.] (Bot.)
   Having the form of a shallow bowl; -- said of a corolla.