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What (who) is tertiary$508171$ - definition

FORMER TERM FOR THE GEOLOGIC PERIOD FROM 65 MILLION TO 2.58 MILLION YEARS AGO

Tertiary Period; Tertiary Period.; Tertiaries; Tertiary period; Tertiary era; Tertiary orogeny; Mantelatas; Tertiary system; Tertiary (geology)

Tertiaries

·pl of Tertiary.

tertiary

['t?:?(?)ri]

¦ adjective

1. third in order or level.

chiefly Brit. relating to or denoting education at a level beyond that provided by schools.

2. relating to or denoting medical treatment provided at a specialist institution.

3. (Tertiary) Geology relating to or denoting the first period of the Cenozoic era (between the Cretaceous and Quaternary periods, about 65 to 1.64 million years ago).

4. Chemistry (of an organic compound) having its functional group on a carbon atom bonded to three other carbon atoms.

Chemistry derived from ammonia by replacement of three hydrogen atoms by organic groups.

¦ noun a lay associate of certain Christian monastic organizations.

Origin

C16: from L. tertiarius 'of the third part or rank'.

Tertiary

·noun The Tertiary era, period, or formation.

II. Tertiary ·adj Later than, or subsequent to, the Secondary.

III. Tertiary ·adj Growing on the innermost joint of a bird's wing; tertial;

- said of quills.

IV. Tertiary ·adj Being of the third formation, order, or rank; third; as, a tertiary use of a word.

V. Tertiary ·noun One of the quill feathers which are borne upon the basal joint of the wing of a bird. ·see ·Illust. of Bird.

VI. Tertiary ·adj 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.

VII. Tertiary ·noun A member of the Third Order in any monastic system; as, the Franciscan tertiaries; the Dominican tertiaries; the Carmelite tertiaries. ·see Third Order, under Third.

Wikipedia

Tertiary

Tertiary ( TUR-shə-ree, TUR-shee-err-ee) is an obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start of the Cenozoic Era, and extended to the beginning of the Quaternary glaciation at the end of the Pliocene Epoch. The time span covered by the Tertiary has no exact equivalent in the current geologic time system, but it is essentially the merged Paleogene and Neogene periods, which are informally called the Early Tertiary and the Late Tertiary, respectively. The Tertiary established the Antarctic as an icy island continent.

https://en.wikipedia.org/wiki/Tertiary