Pyramid, pir′a-mid, n. a solid figure on a triangular, square, or polygonal base, with triangular sides meeting in a point: (pl.) 'the Pyramids,' or great monuments of Egypt: a game played on a billiard-table in which the balls are arranged in pyramid shape.—adjs. Pyram′idal, Pyramid′ic, -al, having the form of a pyramid.—advs. Pyram′idally, Pyramid′ically.—ns. Pyramid′icalness; Pyramid′ion, the small pyramidal apex of an obelisk; Pyram′idist, one versed in the history of the Pyramids; Pyr′amis (Shak.), a pyramid:—pl. Pyram′ides.—adjs. Pyr′amoid, Pyram′idoid. [L.,—Gr. pyramis, pyramidos; prob. Egypt. pir-em-us. Some connection with Gr. pyr, fire.]
Pyramidon, pi-ram′i-don, n. in organ-building a stop having wooden pipes in the form of an inverted pyramid, giving very deep notes somewhat like those of a stopped diapason.
Pyrargyrite, pī-rar′ji-rīt, n. an ore of silver consisting of the sulphide of silver and antimony. [Gr. pyr, fire, argyros, silver.]
Pyre, pīr, n. a pile of wood, &c., on which a dead body is burned.—adj. Pyr′al. [L.,—Gr.,—pyr, fire.]
Pyrene, pī′rēn, n. a stone or putamen.—n. Pyrē′nocarp, any drupaceous fruit.—adjs. Pyrē′noid, globular, nucleiform; Pyrē′nous. [Gr. pyrēn.]
Pyrene, pī′rēn, n. a hydrocarbon obtained from coal-tar.
Pyrenean, pir-ē-nē′an, adj. of or pertaining to the Pyrenees, the range of mountains between France and Spain.—n. Pyrenē′ite, a grayish-black garnet. [L. Pyrenæi (montes), the Pyrenees.]
Pyrenomycetes, pī-rē-nō-mī-sē′tez, n.pl. an order of ascomycetous fungi, including ergot, black-rot, &c. [Gr. pyren, a stone, mykēs, pl. mycētes, a mushroom.]
Pyrethrum, pir-eth′rum, n. a genus of plants containing the fever-few, or golden-feather, so much used in gardens as a bordering. [L.,—Gr.,—pyr, fire.]
Pyretic, pī-ret′ik, adj. pertaining to fever.—n. a remedy for fever.—ns. Pyretol′ogy, the science of fevers; Pyrex′ia, fever.—adjs. Pyrex′ial, Pyrex′ic. [Gr. pyrektikos—pyretos, fever—pyr, fire.]