Having a single set of unpaired chromosomes, as in a germ cell (such as an egg or sperm) or in the somatic cells of a drone bee.
A haploid organism or cell.
[From Greek haploos, single; see sem-1 in the Appendix of Indo-European roots + –OID.]
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.