Definition of monomorphic in English:


Line breaks: mono|morph¦ic
Pronunciation: /ˌmɒnə(ʊ)ˈmɔːfɪk


chiefly Biology
  • 1Having or existing in only one form, in particular:
    More example sentences
    • The aromatic group had a high proportion of monomorphic loci suggestive of a severe or recent bottleneck.
    • Loci are commonly chosen because they were known to be polymorphic in the population studied, while monomorphic loci were not genotyped or discarded from analysis.
    • Three of the loci were monomorphic in all populations.
  • 1.1(Of a species or population) showing little or no variation in morphology or phenotype.
    More example sentences
    • The lesion was a lobulated circumscribed tumor mass composed microscopically of a monomorphic population of ductal cells.
    • Nevertheless, frequencies of monomorphic populations were homogeneous over zoogeographical regions.
    • There were also large differences between populations in diversity, some of the populations being monomorphic and some polymorphic.
  • 1.2(Of an animal species) having sexes that are similar in size and appearance.
    More example sentences
    • Siberian jays are sexually monomorphic with a substantial overlap in size between sexes.
    • Unlike many socially polygynous species, house wrens are sexually monomorphic; both sexes are a fairly uniform brownish gray.
    • Many bird species are morphologically monomorphic for external characters that would differentiate the sexes; sex identification in populations is often problematic.



More example sentences
  • The increase in tail length in M. leucopterus is shown to a greater extent in the males, resulting in sexual monomorphism.
  • Consistent with these predictions, monogamy is correlated with sexual monomorphism and polygamy is correlated with sexual dimorphism.
  • The temperate japonica and aromatic populations also had the highest incidence of monomorphism, with 15 and 21 monomorphic loci, respectively.


More example sentences
  • The biopsies from the gastric lesion showed a marked expansion of the lamina propria due to an infiltration of monomorphous cells with eosinophilic cytoplasm and eccentric nuclei.
  • Cytologie preparations contained a predominantly monomorphous population of tumor cells with moderate eosinophilic cytoplasm with fine, elongated cytoplasmic processes.
  • These lesions were characterized by a monomorphous pattern of slender, elongated spindle cells in a sclerotic stroma.


late 19th century: from mono- 'single' + Greek morphē 'form'.

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