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C 1 (sē)
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n.
A widely used programming language.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
c 1 or C (sē)
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n. pl. c's or C's also cs or Cs
1. The third letter of the modern English alphabet.
2. Any of the speech sounds represented by the letter c.
3. The third in a series.
4. Something shaped like the letter C.
5. C The third best or third highest in quality or rank: a mark of C on a term paper.
6. Music
a. The first tone in the scale of C major or the third tone in the relative minor scale.
b. A key or scale in which the tone of C is the tonic.
c. A written or printed note representing this tone.
d. A string, key, or pipe tuned to the pitch of this tone.
(click for a larger image)
Automobile Nameplate, El Camino
Part passenger car and part pickup truck, this Chevrolet model was introduced by General Motors in 1959.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
C 2
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1. The symbol for carbon.
2. also c The symbol for the Roman numeral one hundred.
3. c The symbol for the speed of light in a vacuum.
4. The symbol for capacitance.
5. The symbol for charge conjugation.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
c 2
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abbr.
1. Physics candle
2. carat
3. charm quark
4. circumference
5. also C Mathematics constant
6. cubic

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
C 3
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abbr.
1. cellphone number
2. Celsius
3. Sports center
4. centigrade
5. Physics charm
6. cold
7. consonant
8. coulomb
9. cytosine

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
C++ (sēplŭsplŭs)
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n.
A widely used object-oriented programming language based on C.

[From ++, name of an operator in the language, and from the use of the plus sign to indicate enhancement.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
C.
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abbr.
1. cape
2. Celtic
3. or c. century
4. chancellor

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
c.
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abbr.
1. capacity
2. cent
3. centavo
4. centime
5. centimo
6. chapter
7. circa
8. congius (gallon)
9. copy
10. copyright
11. cup

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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