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Any one of several species of bombycid moths belonging to Notodonta, Nerice, and allied genera. The caterpillar of these moths has a hump, or spine, on its back.

Of or pertaining to the Octodontidæ, a family of rodents which includes the coypu, and many other South American species.

The division of insects that includes the dragon flies.

Toothache.

Of or pertaining to odontalgia. -- n.

Same as Odontalgia.

Cutting of the teeth; dentition.

A combining form from Gr.

One of the more or less columnar cells on the outer surface of the pulp of a tooth; an odontoplast. They are supposed to be connected with the formation of dentine.

A subdivision of Cetacea, including the sperm whale, dolphins, etc.; the toothed whales.

Generetion, or mode of development, of the teeth.

An instrument for marking or laying off the outlines of teeth of gear wheels.

Of or pertaining to odontography.

A description of the teeth.

Of or pertaining to the odontoid bone or to the odontoid process. Odontoid bone (Anat.), a separate bone, in many reptiles, corresponding to the odontoid process. -- Odontoid process, or Odontoid peg (Anat.), the anterior process of the centrum of the second vertebra, or axis, in birds and mammals. See Axis.…

e in the jaw. It includes Hesperornis, and allied genera. See Hesperornis. [Written also Odontholcae, and Odontoholcae.]

A fossil tooth colored a bright blue by phosphate of iron. It is used as an imitation of turquoise, and hence called bone turquoise.

The science which treats of the teeth, their structure and development.

Same as Cephalophora.

A special structure found in the mouth of most mollusks, except bivalves. It consists of several muscles and a cartilage which supports a chitinous radula, or lingual ribbon, armed with teeth. Also applied to the radula alone. See Radula.