資料來源 : Webster's Revised Unabridged Dictionary (1913)

Megaseme \Meg"a*seme\, a. [Mega- + Gr. ? sing, mark: cf. F.
   m['e]gas[`e]me.] (Anat.)
   Having the orbital index relatively large; having the orbits
   narrow transversely; -- opposed to {microseme}.