cor·pus·cle (kôrpə-səl, -pŭs′əl)
a. An unattached body cell, such as a blood or lymph cell.
b. A rounded globular mass of cells, such as the pressure receptor on certain nerve endings.
2. A discrete particle, such as a photon or an electron.
3. A minute globular particle.
[Latin corpusculum, diminutive of corpus, body; see kwrep- in the Appendix of Indo-European roots.]
cor·puscu·lar (kôr-pŭskyə-lər) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.