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A subdivision of the Chemung period in American geology. See Chart of Geology.

belonging to a period subsequent to the Babylonian captivity or exile (b. c. 597 or about 586-about 537).

Formed or occurring after the last glacial epoch of the Pleistocene period, or at a locality within the area of Pleistocene glaciation after the final disappearance of the glacier from the locality.

Of or pertaining to the period immediately following the Pliocene; Pleistocene. Also used as a noun. See Quaternary.

A subdivision of the Primordial or Cambrian period in American geology; -- so named from the sandstone of Potsdam, New York. See Chart of Geology.

Existing or occurring before Adam; preadamic; as, preadamitic periods.

Prior to the glacial or drift period.

Of or pertaining to a period before written history begins; as, the prehistoric ages; prehistoric man.

basic radical. -- Primary syphilis (Med.), the initial stage of syphilis, including the period from the development of the original lesion or chancre to the first manifestation of symptoms indicative of general constitutional infection. -- Primary union (Surg.), union without suppuration; union by the first intentio…

rtaining to the lowest beds of the Silurian age, corresponding to the Acadian and Potsdam periods in American geology. It is called also Cambrian, and by many geologists is separated from the Silurian.

A printed publication, more especially a newspaper or other periodical. Addison.

Belonging to the earliest period or state; original; primitive; primeval; as, the pristine state of innocence; the pristine manners of a people; pristine vigor.

Anticipating the usual time; -- applied to a periodical disease whose paroxysms return at an earlier hour at every repetition.

An extinct genus of reptiles of the Permian period. Called also Protosaurus.

The period during which the presidency of the senate belonged to the prytanes of the section.

The period when a plant first bears flowers.

The period before puberty, or from birth to fourteen in males, and twelve in females.

The period intervening between one celebration of the Pythian games and the next.

Comprising four years; as, a quadrennial period.

A space or period of four years.