词根词缀：ecto-, ect-

【来源及含义】Greek: outside, external, beyond

【同源单词】ectobiology, ectoblast, ectocardia, ectocytic, ectoderm, ectodermal

词根词缀：hormo-, hormono-

【来源及含义】Greek: to rouse or to set in motion

【同源单词】ectohormone, hormonal, hormone, hormonogenesis, hormonology, hormonoprivia