| 1. | Dentistry. calculus (def. 3). |
| 2. | the deposit from wines, potassium bitartrate. |
| 3. | the intermediate product of cream of tartar, obtained from the crude form, argol. |

| 1. | a member of any of the various tribes, chiefly Mongolian and Turkish, who, originally under the leadership of Genghis Khan, overran Asia and much of eastern Europe in the Middle Ages. |
| 2. | a member of the descendants of this people variously intermingled with other peoples and tribes, now inhabiting parts of the European and W and central Asian Russian Federation. |
| 3. | Tatar (defs. 1–3). |
| 4. | (often lowercase ) a savage, intractable person. |
| 5. | (often lowercase ) an ill-tempered person. |
| 6. | of or pertaining to a Tartar or Tartars; Tartarian. |
| 7. | Tatar (def. 5). Also, Tatar (for defs. 1, 2, 4–8). |
| 8. | catch a Tartar, to deal with someone or something that proves unexpectedly troublesome or powerful. Also, catch a tartar. |

s]
, -lus⋅es. | 1. | Mathematics. a method of calculation, esp. one of several highly systematic methods of treating problems by a special system of algebraic notations, as differential or integral calculus. |
| 2. | Pathology. a stone, or concretion, formed in the gallbladder, kidneys, or other parts of the body. |
| 3. | Also called tartar. Dentistry. a hard, yellowish to brownish-black deposit on teeth formed largely through the mineralization of dead bacteria in dental plaques by the calcium salts in salivary secretions and subgingival transudates. |
| 4. | calculation; estimation or computation: the calculus of political appeal. |

| 1. | a member of a modern Turkic people living in the Tatar Autonomous Republic and adjacent regions of eastern European Russia and in widely scattered communities in western Siberia and central Asia. |
| 2. | the language of this people, including the literary language of the Tatar Autonomous Republic, the dialects of the Tatar Autonomous Republic and adjacent regions of the Volga basin (Volga Tatar), and numerous other dialects, some transitional to other Turkic languages. |
| 3. | Crimean Tatar. |
| 4. | Tartar (defs. 1, 2, 4–8). |
Tar·tar (tär'tər) n.
[Middle English Tartre, from Old French Tartare, from Medieval Latin Tartarus, alteration (influenced by Latin Tartarus, Tartarus) of Persian Tātār; see Tatar.] |
Ta·tar (tä'tər) n.
[Persian Tātār, of Turkic origin.] |
The branch of mathematics, usually studied after algebra, that provides a natural method for describing gradual change.
Note: Most modern sciences use calculus.
Irish soldier (shouting from within the brush): I've captured one of the enemy.Tartar sauce is first recorded 1855, from Fr. sauce tartare.
Captain: Excellent! Bring him here.
Soldier: He won't come.
Captain: Well, then, you come here.
Soldier: I would, but he won't let me.
calculus cal·cu·lus (kāl'kyə-ləs)
n. pl. cal·cu·lus·es or cal·cu·li (-lī')
An abnormal concretion in the body, usually formed of mineral salts and most commonly found in the gallbladder, kidney, or urinary bladder. Also called stone.
Dental tartar.
tartar tar·tar (tär'tər)
n.
A hard, yellowish deposit on the teeth, consisting of organic secretions and food particles deposited in various salts, such as calcium carbonate. Also called dental calculus.
| calculus (kāl'kyə-ləs) Pronunciation Key
Plural calculi (kāl'kyə-lī') or calculuses
|
tartar (tär'tər) Pronunciation Key
|