from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Chemistry Relating to or designating a solution that contains one mole of solute per liter of solution.
  • adj. Chemistry Containing one mole of a substance.
  • adj. Physics Of or relating to a body of matter as a whole, perceived apart from molecular or atomic properties.
  • n. A tooth with a broad crown used to grind food, located behind the premolars.
  • adj. Of or relating to the molars.
  • adj. Capable of grinding.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A back tooth having a broad surface used for grinding one's food.
  • adj. Of, or relating to the molar teeth, or to grinding.
  • adj. Of, relating to, or being a solution containing one mole of solute per litre of solution.
  • adj. Of, or relating to a complete body of matter as distinct from its molecular or atomic constituents.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Of or pertaining to a mass of matter; -- said of the properties or motions of masses, as distinguished from those of molecules or atoms.
  • adj. Being at a concentration having the designated number of moles (of solute) per liter of solvent.
  • adj. Having power to grind; grinding; ; also, of or pertaining to the molar teeth.
  • n. Any one of the teeth back of the incisors and canines. The molars which replace the deciduous or milk teeth are designated as premolars, and those which are not preceded by deciduous teeth are sometimes called true molars. See tooth.

from The Century Dictionary and Cyclopedia

  • Grinding, triturating, or crushing, as distinguished from cutting, piercing, or tearing, as a tooth.
  • Of or pertaining to a molar or molars: as, molar glands.
  • In entomology, of or pertaining to a mola: as, a molar space or area.
  • n. In anatomy, a grinding tooth or grinder; a back tooth; especially, a molar tooth which is not preceded by a milk-molar or milk-tooth: distinguished from premolar, canine, and incisor.
  • n. In ichthyology, a tooth which has a rounded or convex surface, as in sparoid fishes, or a flat surface, as in the Myliobatidæ.
  • n. In entomology, one of the thick internal processes with a grinding surface found on the mandibles of many insects, near the base.
  • Pertaining to a mass or to a body as a whole; acting on or by means of large masses of matter; acting in the aggregate and not in detail; massive: ordinarily used in contrast to molecular.
  • Relating to or having the characters of a uterine mole: as, molar pregnancy. See mole.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or pertaining to the grinding teeth in the back of a mammal's mouth
  • n. grinding tooth with a broad crown; located behind the premolars
  • adj. containing one mole of a substance
  • adj. pertaining to large units of behavior
  • adj. designating a solution containing one mole of solute per liter of solution


From mole5.
From Middle English molares, molars, from Latin molāris, belonging to a mill, grinder, molar, from mola, millstone; see melə- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin molāris meaning grinding as a millstone (mola). (Wiktionary)
From mole (chemical term). (Wiktionary)



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    October 20, 2007