molar

¹ American  

[moh-ler] / ˈmoʊ lər /

noun

molars plural

1. Also called molar tooth.  a tooth having a broad biting surface adapted for grinding, being one of twelve in humans, with three on each side of the upper and lower jaws.

---

adjective

1. adapted for grinding, as teeth.

2. pertaining to such teeth.

molar ² American  

[moh-ler] / ˈmoʊ lər /

adjective

1. Physics. pertaining to a body of matter as a whole, as contrasted with molecular and atomic.

---

molar ³ American  

[moh-ler] / ˈmoʊ lər /

adjective

Chemistry.

1. pertaining to a solution containing one mole of solute per liter of solution.

2. noting or pertaining to gram-molecular weight.

---

molar ¹ British  

/ ˈməʊlə /

noun

1. any of the 12 broad-faced grinding teeth in man

2. a corresponding tooth in other mammals

---

adjective

1. of, relating to, or designating any of these teeth

2. used for or capable of grinding

molar ² British  

/ ˈməʊlə /

adjective

1. (of a physical quantity) per unit amount of substance

   molar volume

2. (not recommended in technical usage) (of a solution) containing one mole of solute per litre of solution

---

molar ¹ Scientific  

/ mō′lər /

1. Relating to a mole.

2. Containing one mole of solute per liter of solution.

---

molar ² Scientific  

/ mō′lər /

1. Any of the teeth located toward the back of the jaws, having broad crowns for grinding food. Adult humans have 12 molars.

---

Other Word Forms

Noun Inflected Forms

• molars
  plural

Etymology

Origin of molar¹

First recorded in 1350–1400; Middle English molares (plural), from Latin molāris “grinding tooth, molar,” equivalent to mol(a) “millstone, mill” + -āris -ar ¹

Origin of molar²

First recorded in 1860–65; from Latin mōl(ēs) “a lump; large mass” + -ar ¹

Origin of molar³

First recorded in 1860–65; mole ⁴ + -ar ¹

Explanation

The big strong teeth in the back of your mouth are molars. Molars make it possible for you to chew and grind the food you eat. If you don't have molars, don't order the steak. Humans generally have twelve molars by the time they're adults, including the wisdom teeth which often grow in crooked and need to be removed. All mammals have molars, used for crushing and grinding food, but they come in a wide variety of sizes and shapes. Molar comes from the Latin molaris dens, "grinding tooth," from the root mola, "millstone."

Example Sentences

As a community organizer with Valley Voices in the Central Valley, Araceli Molar de Barrios hands out free food to farmworkers, along with “Know Your Rights” cards.

From Los Angeles Times • Apr. 17, 2026

Araceli Molar de Barrios labored in the fields for nearly 30 years after arriving in the U.S. in 1995, two years after Chavez’s death.

From Los Angeles Times • Mar. 21, 2026

Satellite images from the weekend show another giant ice block, "Molar Berg", or D28, already drifting next to the remote island.

From BBC • Dec. 4, 2023

David Segal, a European business correspondent for The New York Times based in London, and José Bautista, a reporter based in Madrid, reported from El Molar in Spain’s Jaén province.

From New York Times • Sep. 10, 2022

Molar physics, chemistry, and biology are not three successive steps in the ladder of knowledge, as M. Comte would have us believe, but three branches springing from the common stem of molecular physics.

From Lay Sermons, Addresses and Reviews by Huxley, Thomas Henry