molar (redirected from Molars)

molar /mo·lar/ (mo´lar)

1. pertaining to a mole of a substance.

2. a measure of the concentration of a solute, expressed as the number of moles of solute per liter of solution. Symbol M, , or mol/L.

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molar /mo·lar/ (M) (mo´lar)

1. see under tooth.

2. pertaining to a molar tooth.

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mo·lar ¹ (mlr)

adj.

1. Relating to or being a solution that contains one mole of solute per liter of solution.

2. Of, relating to, or characterizing the physical properties of a body of matter as a whole, especially the mass of a body, as opposed to the molecular or atomic properties.

3. Abbr. M Of, relating to, or being a solution whose concentration is expressed as moles of solute per liter of solution.

4. Containing one mole of a substance.

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mo·lar ² (mlr)

n.

A tooth having a crown with three, four, or five cusps on the grinding surface, a bifid root in the lower jaw, and three conical roots in the upper jaw. In permanent dentition, there are three on either side behind the premolars; in deciduous dentition, there are two on either side behind the canines.

adj.

1. Of or relating to the molars.

2. Capable of grinding.

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molar

[mō′lər]

Etymology: L, moles, mass

1 any of the 12 teeth, 6 in each dental arch, located posterior to the premolars. The crown of each molar is nearly cubical, convex on its buccal and lingual surfaces, and flattened on its surfaces of contact. Each of the upper molars can have three roots. The roots of each third upper molar are often fused. The lower molars are larger than the upper, and each has two roots. The roots of each third lower molar tend to fuse.

2 (M) pertaining to the concentration of a solution, expressed as the number of moles of solute per liter of solution. See also mole².

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molar,

n 1. a reference solution in which the concentration is stated with regard to the number of gram molecular weights per liter of solution.
2. a tooth adapted for grinding by having a broad, somewhat ridged surface. It is one of the 12 teeth located in the posterior aspect of the maxillary and mandibular arches.

molar, mulberry,

n a malformed first molar with a crown, suggesting the appearance of a mulberry. It may be a manifestation of congenital syphilis, although other diseases affecting the enamel organ during morphodifferentiation may produce a similar lesion.

molar sheath,

n a rectangular metallic tube soldered or welded to the molar bands.

molars, second,

n the molars posterior to the first molars and anterior to the third molars (wisdom teeth); also known as 12-year molars.

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molar

1. massive; pertaining to a mass; not molecular.

2. adapted for grinding. See also molar teeth.

3. pertaining to an amount of substance specified in moles rather than mass units.

4. containing 1 mole of solute per liter of solution; symbol M.

note: molal refers to the mass of solvent, molar to the volume of the solution.

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molar extinction coefficient

constant n the equation describing the Lambert-Beer law pertaining to light spectrophotometry. Usually given the symbol ε.

molar extractor

the universal heavy-duty plier-type instrument with jaws offset to the plane of the handles.

molar gland

see salivary gland.

inherited displacement of molar teeth

a deformity of the mandible with gross displacement of the teeth. Affected calves are not viable.

molar tooth

see molar teeth.

molar tooth cutter

long-handled, heavily constructed cutter, usually with a double-action scissor system of closing. The chisel-edged blades face each other and are brought together in parallel. They are operated from outside the mouth of the anesthetized horse and are sufficiently powerful to remove a protruding piece of tooth.

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molar

adjective Referring to the number of moles of solute/L of solution noun Dentistry Any of the posterior, multicusped teeth adapted to grinding Latin mola, millstone. See Peg molar.