how-to (hout) Informal
Offering practical advice and detailed instruction in an activity.
n. pl. how-tos
Something, such as a book or learning situation, that provides practical advice and detailed instruction in an activity: She read a how-to on plumbing. The weekend was a real how-to for would-be campers.
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:
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.