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Any of numerous organisms, such as many fungi and protozoans, that are haploid except during the zygote stage.

[Greek haploos, single, simple; see haploid + -ont.]

hap·lon′tic adj.


(Biology) biology an organism, esp a plant, that has the haploid number of chromosomes in its somatic cells
haˈplontic adj


(ˈhæp lɒnt)

the haploid individual in a life cycle that has a diploid and a haploid phase.
[1915–20; hapl(oid) + -ont < Greek ont-, s. of ṓn being, present participle of eînai to be (compare onto-)]
References in periodicals archive ?
In a word, the non-smooth surface of pincers of crawfish and its change-rule of the surface of small haplonts give us a thought for researching on the non-smooth surface and its engineering application.
(1) Quantitative research on the influence which the non-smooth surface characteristics of pincers of crawfish and the size, form, and the distribution of non-smooth small haplonts will produce on the drag reduction and wear resistance; then further study the variation rules of small haplonts using series of simulation experiments, so that we can find the variation rules of the drag reduction and wear resistance.
Contrary to the haplonts, the diplonts of bryophytes and ferns are totally different.