Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of tertiary is as below...

Pleistocene :: Pleistocene (a.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man..

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..

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..

Oreodon :: Oreodon (n.) A genus of extinct herbivorous mammals, abundant in the Tertiary formation of the Rocky Mountains. It is more or less related to the camel, hog, and deer..

Eocene :: Eocene (a.) Pertaining to the first in time of the three subdivisions into which the Tertiary formation is divided by geologists, and alluding to the approximation in its life to that of the present era; as, Eocene deposits..

Tertiary :: 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..

Alabama Period :: Alabama period () A period in the American eocene, the lowest in the tertiary age except the lignitic..

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..

Paleotherium :: Paleotherium (n.) An extinct genus of herbivorous Tertiary mammals, once supposed to have resembled the tapir in form, but now known to have had a more slender form, with a long neck like that of a llama..

Toxodonta :: Toxodonta (n.pl.) An extinct order of Mammalia found in the South American Tertiary formation. The incisor teeth were long and curved and provided with a persistent pulp. They are supposed to be related both to the rodents and ungulates. Called also Toxodontia.

Tertiary :: Tertiary (n.) The Tertiary era, period, or formation..

Posttertiary :: Posttertiary (a.) Following, or more recent than, the Tertiary; Quaternary..

Crag :: Crag (n.) A partially compacted bed of gravel mixed with shells, of the Tertiary age..

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..

Xiphodon :: Xiphodon (n.) An extinct genus of artiodactylous mammals found in the European Tertiary formations. It had slender legs, didactylous feet, and small canine teeth..

Nummulites :: Nummulites (n.) A genus of extinct Tertiary Foraminifera, having a thin, flat, round shell, containing a large number of small chambers arranged spirally..

Hipparion :: Hipparion (n.) An extinct genus of Tertiary mammals allied to the horse, but three-toed, having on each foot a small lateral hoof on each side of the main central one. It is believed to be one of the ancestral genera of the Horse family..

Triethylamine :: Triethylamine (n.) A tertiary amine analogous to trimethylamine.

Olive :: Olive (n.) One of the tertiary colors, composed of violet and green mixed in equal strength and proportion..

Neocene :: Neocene (a.) More recent than the Eocene, that is, including both the Miocene and Pliocene divisions of the Tertiary..

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