Meaning of unisexual in English:


Pronunciation /juːnɪˈsɛkʃʊəl/


  • 1(of an organism) either male or female; not hermaphrodite.

    ‘This means that the unisexual females are actually parasitizing bisexual males of these other species.’
    • ‘When H. frenatus arrives on an island, the population of the unisexual species plummets.’
    • ‘Various species may be unisexual, hermaphroditic, or have separate sexes.’
    • ‘Both individuals and gametes were unisexual, and self-fertilization was allowed.’
    • ‘As is the condition in other unisexual vertebrates, the silver crucian carp probably has a hybridization origin.’
    1. 1.1Botany (of a flower) having either stamens or pistils but not both.
      ‘Plants are characterized as having unisexual flowers and dichotomously forked leaves arranged in crowded whorls.’
      • ‘The genus has reduced unisexual flowers grouped into characteristic pseudanthia called cyathia.’
      • ‘They have unisexual flowers, are wind-pollinated, and apparently have a very short and inconspicuous flowering time so that the presence of flowers is easily overlooked.’
      • ‘Sexually the species are structurally gynodioecious, but there is a strong tendency towards dioecism with apparently bisexual flowers often being functionally unisexual.’
      • ‘The genera of Atripliceae, as the tribe is traditionally defined, have flowers that are usually unisexual and enclosed by well-developed bracteoles.’
  • 2Biology
    Involving or repesenting only one sex.

    ‘a single parthenogenetic female reaching a favourable new habitat can start a new unisexual population’
    • ‘The ability to undergo both unisexual and bisexual reproduction may provide evolutionary advantages in environments where suitable mating partners are scarce.’
    • ‘Unisexual salamanders are polyploids, meaning they have more than two sets of chromosomes.’
    • ‘Several Ambystoma species are unisexual—that is, they consist only of parthenogenetic females.’
    • ‘In fungi, unisexual reproduction, where sexual development is initiated without the presence of two compatible mating type alleles, has been observed in several species that can also undergo traditional bisexual reproduction.’
    • ‘How are these animals able to avoid the problems otherwise associated with unisexual reproduction?’
    • ‘Quantitative description of unisexual reproduction, and detailed comparisons between unisexual and bisexual reproduction, are lacking.’
    • ‘The Hawaiian Islands have long been home to Lepidodactylas lugubris, a species of unisexual lizards.’
    • ‘While the unisexual salamanders usually reproduce through cloning, they "borrow" salamander sperm from other species to stimulate egg production.’
    • ‘The biology and evolution of unisexual mole salamanders has become a contentious and much-debated subject.’
    • ‘An assessment of genetic and epigenetic diversity that exists in unisexual populations in spite of "clonal" reproduction is largely lacking.’