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.