[ kron-oh ]
/ ˈkrɒn oʊ /
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noun, plural chron·os.
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
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The rainy weather could not ________ my elated spirits on my graduation day.
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Origin of chrono

By shortening; see -o

Other definitions for chrono (2 of 2)


a combining form meaning “time,” used in the formation of compound words: chronometer.
Also especially before a vowel, chron-.

Origin of chrono-

<Greek, combining form of chrónos
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022


What does chrono- mean?

Chrono- is a combining form used like a prefix meaning “time.” It is used in some scientific and medical terms.

Chrono- comes from the Greek chrónos, meaning “time.” The adjective chronic, meaning “constant” or “habitual,” also derives from this root.

What are variants of chrono-?

When combined with words or word elements that begin with a vowel, chrono- becomes chron-, as in chronaxie (using the French equivalent of the form).

Examples of chrono-

You may be familiar with the combining form chrono- from the word chronology, meaning “the sequential order in which past events occur.”

The first part of the word, chrono-, means “time.” The second part of the word, -logy, often denotes an area of “discourse” or “study.” Chronology, then, literally means “study of time.”

What are some words that use the combining form chrono-?

What are some other forms that chrono- may be commonly confused with?

Break it down!

The combining form -meter means “measure.” With this in mind, what does a chronometer measure?

How to use chrono in a sentence

British Dictionary definitions for chrono


before a vowel chron-

combining form
indicating timechronology; chronometer

Word Origin for chrono-

from Greek khronos time
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for chrono


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.