a. The natural attraction between physical bodies, especially when one of the bodies is a celestial body, such as the earth.
b. See gravitation.
2. Grave consequence; seriousness or importance: They are still quite unaware of the gravity of their problems.
3. Solemnity or dignity of manner.
[French gravité, heaviness, from Old French, from Latin gravitās, from gravis, heavy; see gwerə-1 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.