1. The act, process, or condition of cohering: exhibited strong cohesion in the family unit.
2. Physics The intermolecular attraction by which the elements of a body are held together.
3. Botany The congenital union of parts of the same kind, such as a calyx of five united sepals.
[From Latin cohaesus, past participle of cohaerēre, to cling together; see COHERE.]
co·hesive (-sĭv, -zĭv) adj.
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.