1. The act or position of one that sits.
2. A period during which one is seated and occupied with a single activity, such as posing for a portrait or reading a book.
3. A session or term, as of a legislature or court.
a. An act, condition, or period of brooding on eggs by a bird; incubation.
b. The number of eggs under a brooding bird; a clutch.
1. Incubating a nest of eggs: a sitting hen.
2. Occupying an official position; incumbent.
a. Of or for sitting: a sitting posture; a sitting area in a bus station.
b. Done or executed while sitting.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. 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.