use-icon

HOW TO USE THE DICTIONARY

Learn what the dictionary tells you about words.

Get Started Now!

Some compound words (like bus rapid transit, dog whistle, or identity theft) don’t appear on the drop-down list when you enter them into the search window. If a compound term doesn’t appear in the drop-down list, try entering the term into the search window and then hit the search button (instead of the “enter” key). Alternatively, begin searches for compound terms with a quotation mark.

use-icon

THE USAGE PANEL

The Usage Panel is a group of nearly 200 prominent scholars, creative writers, journalists, diplomats, and others in occupations requiring mastery of language. The Panelists are surveyed annually to gauge the acceptability of particular usages and grammatical constructions.

The Panelists

puzzle-icon

NEED HELP SOLVING A CROSSWORD PUZZLE?

Go to our Crossword Puzzle Solver and type in the letters that you know, and the Solver will produce a list of possible solutions.

open-icon

INTERESTED IN DICTIONARIES?

Check out the Dictionary Society of North America at http://www.dictionarysociety.com

open-icon

AMERICAN HERITAGE DICTIONARY APP

The new American Heritage Dictionary app is now available for iOS and Android.

scroll-icon

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.

open-icon

OPEN DICTIONARY PROJECT

Share your ideas for new words and new meanings of old words!

Start Sharing Now!

100-words-icon

See word lists from the best-selling 100 Words Series!

Find out more!

me·ter 1 (mētər)
Share:
n.
1.
a. The measured arrangement of words in poetry, as by accentual rhythm, syllabic quantity, or the number of syllables in a line.
b. A particular arrangement of words in poetry, such as iambic pentameter, determined by the kind and number of metrical units in a line.
c. The rhythmic pattern of a stanza, determined by the kind and number of lines.
2. Music
a. Division into measures or bars.
b. A specific rhythm determined by the number of beats and the time value assigned to each note in a measure.

[Middle English metre, from Old English meter and from Old French metre, both from Latin metrum, from Greek metron, measure, poetic meter; see mē-2 in the Appendix of Indo-European roots.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2016 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
me·ter 2 (mētər)
Share:
n. Abbr. m
The international standard unit of length, approximately equivalent to 39.37 inches. It was redefined in 1983 as the distance traveled by light in a vacuum in 1/299,792,458 of a second. See Table at measurement.

[French mètre, from Greek metron, measure; see mē-2 in the Appendix of Indo-European roots.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2016 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
me·ter 3 (mētər)
Share:
n.
1. Any of various devices designed to measure time, distance, speed, or intensity or indicate and record or regulate the amount or volume, as of the flow of a gas or an electric current.
2. A postage meter.
3. A parking meter.
tr.v. me·tered, me·ter·ing, me·ters
1. To measure with a meter: meter a flow of water.
2. To supply in a measured or regulated amount: metered the allotted gasoline to each vehicle.
3. To imprint with postage or other revenue stamps by means of a postage meter or similar device: metering bulk mail.
4. To provide with a parking meter or parking meters: meter parking spaces.

[From -METER.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2016 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
-meter
Share:
suff.
Measuring device: anemometer.

[French -mètre, from Greek metron, measure; see mē-2 in the Appendix of Indo-European roots.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2016 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

This website is best viewed in Chrome, Firefox, Microsoft Edge, or Safari. Some characters in pronunciations and etymologies cannot be displayed properly in Internet Explorer.