资料来源 : pyDict

货币石

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

Nummulite \Num"mu*lite\, n. [L. nummus a coin + -lite: cf. F.
   nummulite.] (Paleon.)
   A fossil of the genus Nummulites and allied genera.

资料来源 : WordNet®

nummulite
     n : large fossil protozoan of the Tertiary period