ˈ ̷ ̷+ˌ- noun
Etymology: sub- + age
: a distinguishable subdivision of a geologic age usually characterized by the occurrence of some specific phenomenon (as a deposition of loess or a glacial recession)
ˈ ̷ ̷+ˌ- noun
Etymology: sub- + age
: a distinguishable subdivision of a geologic age usually characterized by the occurrence of some specific phenomenon (as a deposition of loess or a glacial recession)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012