transcription, транскрипция: [ ˈä-li-gō-ˌsēn, ˈō-; ə-ˈli-gə- ]
adjective
Etymology: International Scientific Vocabulary
Date: circa 1859
: of, relating to, or being an epoch of the Tertiary between the Eocene and Miocene or the corresponding series of rocks — see geologic time table
• Oligocene noun