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Definitions

Century Dictionary and Cyclopedia

  1. n. A genus of coniferous trees of the tribe Abietineæ, known by the staminate flowers in numerous short yellowish catkins, and the two forms of leaves, the primary small and scale-like, the secondary long and conspicuous and in clusters of from one to five each, enveloped at the base by a dry sheath. There are about 70 species, widely distributed throughout north temperate regions, with a very few extending within the tropics in eastern Asia and Central America. They are tall or sometimes low. evergreens bearing ovoid or oblong cones of closely imbricated woody scales, with thin or thickened apex. Every scale bears two winged seeds, the embryo with from three to ten seed-leaves set in a circle. (See cut under cotyledon.) The scales remain tightly set together over the seeds from fertilization till maturity, and after opening and dischargiug the seeds are long persistent on their axis. The cones vary in size from 2 inches and less in P. edulis, the piñon, to 6 inches in the well-known cones of the white pine, P. Strobus, and reach 18 inches or more in P. Lambertiana, the sugar-pine. The United States is particularly rich in pines, being the home of half the known species. For species and uses, see pine. See cuts under cone, Abietineæ, cotyledon, and pollen.
  2. n. [lowercase] Same as pineal body (which see, under pineal).

GNU Webster's 1913

  1. n. (Bot.) A large genus of evergreen coniferous trees, mostly found in the northern hemisphere. The genus formerly included the firs, spruces, larches, and hemlocks, but is now limited to those trees which have the primary leaves of the branchlets reduced to mere scales, and the secondary ones (pine needles) acicular, and usually in fascicles of two to seven. See pine.

WordNet 3.0

  1. n. type genus of the Pinaceae: large genus of true pines

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  • hernesheir Genus name for the many species of pine trees. Australian pine is not a pine, damn it! Aug 28, 2009

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‘pinus’ has been looked up 591 times, added to 1 list, commented on 1 time, and is not a valid Scrabble word.