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co·lon 1 (kōlən)
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n.
1. pl. co·lons
a. A punctuation mark ( : ) used after a word introducing a quotation, explanation, example, or series and often after the salutation of a business letter.
b. The sign ( : ) used between numbers or groups of numbers in expressions of time (2:30 AM) and ratios (1:2).
2. pl. co·la (-lə)
a. A section of a metrical period in quantitative verse, consisting of two to six feet and in Latin verse having one principal accent.
b. An analogous unit or division of classical Greek or Latin prose.

[Latin cōlon, part of a verse, from Greek kōlon, limb, member, metrical unit.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
co·lon 2 (kōlən)
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n. pl. co·lons or co·la (-lə)
The section of the large intestine extending from the cecum to the rectum.

[Middle English, from Latin, from Greek kolon, large intestine.]

co·lonic (kə-lŏnĭk) adj.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
co·lon 3 (kō-lōn)
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n. pl. co·lons or co·lo·nes (-lōnās)
See Table at currency.

[Spanish colón, after Cristóbal Colón, Christopher Columbus.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
Co·lón (kə-lŏn, kō-lōn)
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A city of northern Panama at the Caribbean entrance to the Panama Canal. The city was founded as Aspinwall in 1850 by Americans working on the Panama Railroad and was renamed in 1890.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

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