单词	actinost
释义	actinost noun ac·​ti·​nost ˈak-tə-ˌnäst plural -s : one of certain small bones directly supporting the rays of paired fins of teleost and some ganoid fishes called also carpal, pterygiophore compare hypercoracoid Word History Etymology actin- + -ost First Known Use 1872, in the meaning defined above
随便看	umbellifer umbelliferaes umbelliferous umbellifers Umbelliflorae Umbellula umbellulariae umbellularias umbellulate umbellule umbellules umbelluliferous umbellulone umbels umber umbered umberer umberest umbering umberrer umberrest umbers Umberto umbilic umbilical

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