haploidPronunciation: /ˈhaplɔɪd/ GeneticsDefinition of haploid adjective (of a cell or nucleus) having a single set of unpaired chromosomes. Compare with diploid. (of an organism or part) composed of haploid cells: in mosses, the conspicuous leafy structures are haploid noun a haploid organism or cell. Derivatives haploidy noun Origin: early 20th century: from Greek haploos 'single' + -oidhaploid in other Oxford dictionaries Definition of haploid in the US English dictionary
