资料来源 : pyDict

椎弓凹

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

Zygantrum \Zy*gan"trum\, n.; pl. {Zygantra}. [Gr. ? a yoke + ? a
   cave, hole.] (Anat.)
   See under {Zygosphene}.