[ hap-loid ]
/ ˈhæp lɔɪd /
adjective Also hap·loi·dic.
Biology. pertaining to a single set of chromosomes.
Biology. an organism or cell having only one complete set of chromosomes, ordinarily half the normal diploid number.
Origin of haploid
First recorded in 1905–10; hapl-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for haploid
Technically the tissue-cells are said to contain the diploid number of chromosomes, the gametes the reduced or haploid number.
Haploid (n) chromosome numbers were determined from cells in diakinesis, metaphase I, and metaphase II of meiosis.
The next stage is their separation to the haploid daughter-nuclei, which have resulted from the reduction process.
Each of these divides again by mitosis (the chromosomes splitting lengthwise), the half or haploid number remaining.
British Dictionary definitions for haploid
adjective also: haploidic
(esp of gametes) having a single set of unpaired chromosomes
a haploid cell or organism
Derived Formshaploidy, noun
Word Origin for haploid
C20: from Greek haploeidēs single, from haplous single
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for haploidadj.
1908, from German haploid (1905), from Greek haplos "single."
Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for haploid
Having the same number of sets of chromosomes as a germ cell, or half the diploid number of a somatic cell. The haploid number (23 in humans) is the normal chromosome complement of germ cells.
Related formshap′loi′dy (-loi′dē) n.
A haploid organism or cell.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for haploid
Having a single set of each chromosome in a cell or cell nucleus. In most animals, only the gametes (reproductive cells) are haploid. Compare aneuploid diploid. See Note at mitosis.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.