proto- 或 prot-pref.(前缀)First in time; earliest:时间上最先的;最早的:例句:protolithic.始石器的
First formed; primitive; original:最先形成的;原始的;原初的:例句:protohuman.原人
Proto- Being a form of a language that is the ancestor of a language or group of related languages: Proto- 作为一种或一组相关的语言的始祖形式的:例句:Proto-Germanic.原始日耳曼语系
Having the least amount of a specified element or radical:含某些定元素或基团的数量最少的:例句:protoporphyrin.原卟啉
来源:Greek prôto- 希腊语 prôto- from prôtos * see per 源自 prôtos *参见 per