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12-letter words starting with os

  • osage orange — Also called bois d'arc, bowwood. a tree, Maclura pomifera, of the mulberry family, native to the south-central U.S., having hard, yellowish wood and often cultivated for hedges.
  • oscillations — Plural form of oscillation.
  • oscillograms — Plural form of oscillogram.
  • oscillograph — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
  • oscillometer — an instrument for measuring oscillations, especially those of the arterial pulse.
  • oscillometry — an instrument for measuring oscillations, especially those of the arterial pulse.
  • oscilloscope — a device that gives a visual graph of amplitude versus time of a measured signal, as voltage or current.
  • osco-umbrian — a group of languages, usually classified as Italic, that contains Oscan and Umbrian.
  • osmoreceptor — A sensory receptor, primarily found in the hypothalamus of most homeothermic organisms, that detects changes in osmotic pressure.
  • ossification — the act or process of ossifying.
  • osteichthyes — the class comprising the bony fishes.
  • ostentations — pretentious or conspicuous show, as of wealth or importance; display intended to impress others.
  • ostentatious — characterized by or given to pretentious or conspicuous show in an attempt to impress others: an ostentatious dresser.
  • osteoblastic — a bone-forming cell.
  • osteoclastic — (pathology) Of or pertaining to an osteoclast.
  • osteogenesis — the formation of bone.
  • osteogenetic — (physiology) Connected with osteogenesis, or the formation of bone.
  • osteological — Of or relating to osteology.
  • osteomalacia — a condition characterized by softening of the bones with resultant pain, weakness, and bone fragility, caused by inadequate deposition of calcium or vitamin D.
  • osteomalacic — a condition characterized by softening of the bones with resultant pain, weakness, and bone fragility, caused by inadequate deposition of calcium or vitamin D.
  • osteoplastic — Surgery. pertaining to osteoplasty.
  • osteoporosis — a disorder in which the bones become increasingly porous, brittle, and subject to fracture, owing to loss of calcium and other mineral components, sometimes resulting in pain, decreased height, and skeletal deformities: common in older persons, primarily postmenopausal women, but also associated with long-term steroid therapy and certain endocrine disorders.
  • osteoporotic — of, relating to, or caused by osteoporosis.
  • osteosarcoma — a malignant tumor of the bone.
  • ostrich fern — a tall North American fern, Matteuccia struthiopteris, with large mature leaves that resemble ostrich plumes, a popular landscaping plant whose curled new leaves, called fiddleheads, are eaten as a vegetable.

On this page, we collect all 12-letter words starting with OS. It’s easy to find right word with a certain length. It is the easiest way to find 12-letter word that beginning with OS to use in Scrabble or Crossword puzzles.

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