| EOCENE | • Eocene adj. (Geology) of a geologic epoch within the Paleogene period from about 56 to 34 million years ago. • Eocene prop.n. (Geology) the Eocene epoch.
 • EOCENE adj. of rock formed in the second epoch of the Tertiary geological period.
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| MIOCENE | • Miocene adj. (Geology) Of a geologic epoch within the Neogene period from about 23 to 5.3 million years ago; marked… • Miocene prop.n. (Geology) The Miocene epoch.
 • MIOCENE adj. denoting the fourth epoch of the Tertiary period.
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| HOLOCENE | • Holocene adj. (Geology) Of a geologic epoch within the Neogene period from about the year 10 000 BC to the present; the age of man. • Holocene prop.n. (Geology) The Holocene epoch.
 • HOLOCENE adj. relating to the second and most recent epoch of the Quaternary period.
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| PLIOCENE | • Pliocene adj. (Geology) Of a geologic epoch within the Neogene period from about 5.3 to 1.7 million years ago; marked… • Pliocene prop.n. (Geology) The Pliocene epoch.
 • PLIOCENE adj. relating to the epoch where mammals appeared.
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| FERROCENE | • ferrocene n. Any of a class of metallocenes containing an iron atom between two cyclopentadienyl rings; especially… • FERROCENE n. an orange crystalline compound used as a fuel additive.
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| OLIGOCENE | • Oligocene adj. (Geology) Of a geologic epoch within the Paleogene period from about 34 to 23 million years ago; marked… • Oligocene prop.n. (Geology) The Oligocene epoch.
 • OLIGOCENE adj. belonging to a certain geological time period.
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| PALEOCENE | • Paleocene adj. (Geology) Of or pertaining to the Paleocene epoch. • Paleocene prop.n. (Geology) A geologic epoch within the Paleogene period from about 65 to 56 million years ago; marked…
 • PALEOCENE adj. belonging to a certain geological time period, also PALEOGENE.
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| PLEIOCENE | • Pleiocene adj. Alternative form of Pliocene. • Pleiocene prop.n. Alternative form of Pliocene.
 • PLEIOCENE adj. of the Pliocene geological time period, also PLIOCENE.
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| FERROCENES | • ferrocenes n. Plural of ferrocene. • FERROCENE n. an orange crystalline compound used as a fuel additive.
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| METALLOCENE | • metallocene n. (Chemistry) Any of a class of organic compounds containing two cyclopentadienyl anions and a transition… • METALLOCENE n. any one of a class of organometallic sandwich compounds.
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| METALLOCENES | • metallocenes n. Plural of metallocene. • METALLOCENE n. any one of a class of organometallic sandwich compounds.
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