use-icon

HOW TO USE THE DICTIONARY

To look up an entry in The American Heritage Dictionary of the English Language, use the search window above. For best results, after typing in the word, click on the “Search” button instead of using the “enter” key.

Some compound words (like bus rapid transit, dog whistle, or identity theft) don’t appear on the drop-down list when you type them in the search bar. For best results with compound words, place a quotation mark before the compound word in the search window.

guide to the dictionary

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. Annual surveys have gauged the acceptability of particular usages and grammatical constructions.

The Panelists

open-icon

AMERICAN HERITAGE DICTIONARY APP

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

scroll-icon

THE AMERICAN HERITAGE DICTIONARY BLOG

The articles in our blog examine new words, revised definitions, interesting images from the fifth edition, discussions of usage, and more.

100-words-icon

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

Find out more!

open-icon

INTERESTED IN DICTIONARIES?

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

com·pa·ny (kŭmpə-nē)
Share:
n. pl. com·pa·nies
1. A group of persons: a company of scientists.
2.
a. One's companions or associates: moved in fast company; is known by the company she keeps.
b. A guest or guests: had company for the weekend.
c. The state of friendly companionship; fellowship: was grateful for her company; friends who finally parted company.
3.
a. A business enterprise; a firm.
b. A partner or partners not specifically named in a firm's title: Lee Rogers and Company.
4. A troupe of dramatic or musical performers: a repertory company.
5.
a. A subdivision of a military regiment or battalion that constitutes the lowest administrative unit. It is usually under the command of a captain and is made up of at least two platoons.
b. A unit of firefighters.
6. A ship's crew and officers. See Usage Note at collective noun.
v. com·pa·nied, com·pa·ny·ing, com·pa·nies
v.tr.
To accompany or associate with.
v.intr.
To keep company with someone; associate.

[Middle English compainie, from Old French compaignie, from Vulgar Latin *compānia, from *compāniō, companion; see COMPANION1.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.