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  • English Word Onycha Definition An ingredient of the Mosaic incense, probably the operculum of some kind of strombus.
  • English Word Onycha Definition The precious stone called onyx.
  • English Word Onychia Definition A whitlow.
  • English Word Onychia Definition An affection of a finger or toe, attended with ulceration at the base of the nail, and terminating in the destruction of the nail.
  • English Word Onychomancy Definition Divination by the nails.
  • English Word Onychophora Definition Malacopoda.
  • English Word Onyx Definition Chalcedony in parallel layers of different shades of color. It is used for making cameos, the figure being cut in one layer with the next as a ground.
  • English Word Oo Definition One.
  • English Word Oo Definition A beautiful bird (Moho nobilis) of the Hawaiian Islands. It yields the brilliant yellow feathers formerly used in making the royal robes. Called also yellow-tufted honeysucker.
  • English Word Ooecia Definition of Ooecium
  • English Word Ooecium Definition One of the special zooids, or cells, of Bryozoa, destined to receive and develop ova; an ovicell. See Bryozoa.
  • English Word Oogenesis Definition The development, or mode of origin, of the ova.
  • English Word Oogonia Definition of Oogonium
  • English Word Oogonium Definition A special cell in certain cryptogamous plants containing oospheres, as in the rockweeds (Fucus), and the orders Vaucherieae and Peronosporeae.
  • English Word Oogoniums Definition of Oogonium
  • English Word Ooidal Definition Shaped like an egg.
  • English Word Ook Definition Oak.
  • English Word Oolite Definition A variety of limestone, consisting of small round grains, resembling the roe of a fish. It sometimes constitutes extensive beds, as in the European Jurassic. See the Chart of Geology.
  • English Word Oolitic Definition Of or pertaining to oolite; composed of, or resembling, oolite.
  • English Word Oological Definition Of or pertaining to oology.
  • English Word Oologist Definition One versed in oology.
  • English Word Oology Definition The science of eggs in relation to their coloring, size, shape, and number.
  • English Word Oolong Definition A fragrant variety of black tea having somewhat the flavor of green tea.
  • English Word Oomiac Definition Alt. of Oomiak
  • English Word Oomiak Definition A long, broad boat used by the Eskimos.
  • English Word Oon Definition One.
  • English Word Oones Definition Once.
  • English Word Oop Definition To bind with a thread or cord; to join; to unite.
  • English Word Oopack Definition Alt. of Oopak
  • English Word Oopak Definition A kind of black tea.