CryogenianWiktionary 原文构词拆分cryogenic词根/词干“of low temperature”+-ian后缀(as an adjective) From, related to, or like. · (as a noun) One from, belonging to, relating to, or like.词源说明From cryogenic (“of low temperature”) + -ian.释义（英文）形容词 Adjective(geology) Of a geologic period within the Neoproterozoic era from about 850 to 600 million years ago.专有名词 Proper noun(geology) The Cryogenian period.