Definition of tertiary

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Tertiary (a.) Possessing some quality in the third degree; having been subjected to the substitution of three atoms or radicals; as, a tertiary alcohol, amine, or salt. Cf. Primary, and Secondary..

Lern More About Tertiary

Pliocene :: Pliocene (a.) Of, pertaining to, or characterizing, the most recent division of the Tertiary age..
Flysch :: Flysch (n.) A name given to the series of sandstones and schists overlying the true nummulitic formation in the Alps, and included in the Eocene Tertiary..
Laramie Group :: Laramie group () An extensive series of strata, principally developed in the Rocky Mountain region, as in the Laramie Mountains, and formerly supposed to be of the Tertiary age, but now generally regarded as Cretaceous, or of intermediate and transitional character. It contains beds of lignite, often valuable for coal, and is hence also called the lignitic group. See Chart of Geology..
Neocene :: Neocene (a.) More recent than the Eocene, that is, including both the Miocene and Pliocene divisions of the Tertiary..
Diabase :: Diabase (n.) A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone..
Tertiary :: Tertiary (n.) One of the quill feathers which are borne upon the basal joint of the wing of a bird. See Illust. of Bird.
Amblypoda :: Amblypoda (n. pl.) A group of large, extinct, herbivorous mammals, common in the Tertiary formation of the United States..
Coryphodon :: Coryphodon (n.) A genus of extinct mammals from the eocene tertiary of Europe and America. Its species varied in size between the tapir and rhinoceros, and were allied to those animals, but had short, plantigrade, five-toed feet, like the elephant..
Posttertiary :: Posttertiary (a.) Following, or more recent than, the Tertiary; Quaternary..
Taxeopoda :: Taxeopoda (n. pl.) An order of extinct Mammalia found in the Tertiary formations.
Period :: Period (n.) One of the great divisions of geological time; as, the Tertiary period; the Glacial period. See the Chart of Geology..
Subapical :: Subapennine (a.) Under, or at the foot of, the Apennine mountains; -- applied, in geology, to a series of Tertiary strata of the older Pliocene period..
Tertiary :: Tertiary (a.) Being of the third formation, order, or rank; third; as, a tertiary use of a word..
Olive :: Olive (n.) One of the tertiary colors, composed of violet and green mixed in equal strength and proportion..
Crag :: Crag (n.) A partially compacted bed of gravel mixed with shells, of the Tertiary age..
Tertiary :: Tertiary (n.) The Tertiary era, period, or formation..
Pleistocene :: Pleistocene (a.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man..
Bad Lands :: Bad lands () Barren regions, especially in the western United States, where horizontal strata (Tertiary deposits) have been often eroded into fantastic forms, and much intersected by ca�ons, and where lack of wood, water, and forage increases the difficulty of traversing the country, whence the name, first given by the Canadian French, Mauvaises Terres (bad lands)..
Miocene :: Miocene (a.) Of or pertaining to the middle division of the Tertiary.
Sivatherium :: Sivatherium (n.) A genus of very large extinct ruminants found in the Tertiary formation of India. The snout was prolonged in the form of a proboscis. The male had four horns, the posterior pair being large and branched. It was allied to the antelopes, but very much larger than any exsisting species..
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