Definition of bisexual in US English:



  • 1Sexually attracted not exclusively to people of one particular gender; attracted to both men and women.

    • ‘That would prevent the case from setting any legal precedents on same-sex sexual harassment involving gay and bisexual women.’
    • ‘At Phase 1, the target population would be screened for sexual orientation, thus identifying lesbian and bisexual women for the sample.’
    • ‘Gay, lesbian, and bisexual adolescents also may be isolated by street subcultures or by discomfort from what few resources exist.’
    • ‘In conclusion, this exploratory analysis highlights the importance of promoting HIV testing among gay, lesbian, and bisexual adolescents.’
    • ‘A strength of this book is that most of the authors took care to mention the relevance of the issue under discussion to gay, lesbian, and bisexual youth.’
    • ‘In all, this study adds to the small literature on what lesbian and bisexual women find attractive in body shape.’
    • ‘And he would end the ban on openly gay, lesbian, and bisexual individuals serving in the armed forces.’
    • ‘In addition, many such clients are bisexual in attractions and/or behavior.’
    • ‘In the decades of gay, lesbian, transgender and bisexual activism, minority sexualities have gained increasing understanding and visibility.’
    • ‘There's a lot more awareness and acceptance of gay and lesbian and bisexual lifestyles.’
    • ‘Respondents reported their sexual identity as gay, bisexual, or heterosexual.’
    • ‘Heterosexuals' attitudes toward bisexual men and women have only recently become the object of scientific research.’
    View synonyms
  • 2Botany
    (of a flower) having both stamens and pistils; hermaphrodite.

    • ‘Flowers are bisexual, protogynous and pollinated by insects.’
    • ‘It is a comparison of mortality among male, bisexual, female and non-flowering Acer rufinerve in each year from 1992 to 1997.’
    • ‘The cone exhibits at least a partially bisexual character that appears to have pollen sacs with monosulcate ribbed pollen grains and sessile, asymmetric, and radiospermic ovules.’
    • ‘Within the anthophyte clade, there is significant homoplasy in the distribution of bisexual reproductive structures.’
    • ‘Previous studies based on a qualitative analysis have shown a high degree of variability in the mode of expression of carpel/stamen in homeotic bisexual flowers.’
    hermaphrodite, hermaphroditic
    View synonyms
  • 3Biology
    (of a species) having two distinct sexes.

    ‘in mainland Europe there are eleven bisexual species of this genus’
    1. 3.1 (of reproduction) involving separate male and female sexes.
      ‘in fungi, unisexual reproduction has been observed in several species that can also undergo traditional bisexual reproduction’


  • A person who is sexually attracted not exclusively to people of one particular gender.

    • ‘Myths and stereotypes about bisexuals abound.’
    • ‘Growing up as a bisexual was horribly confusing and I always had to be one thing or the other and in actual fact I'm neither.’
    • ‘Lesbians, gay men, and bisexuals represent a sexual minority, and like other minorities, they often face experiences of discrimination.’
    • ‘The choice can be even more complicated for gays, lesbians, bisexuals, and transgendered people.’