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[het-er-uh-sek-shoo-uh l or, esp. British, -seks-yoo-] /ˌhɛt ər əˈsɛk ʃu əl or, esp. British, -ˈsɛks yu-/

of, relating to, or exhibiting .
Biology. pertaining to the opposite sex or to both sexes.
a heterosexual person.
a person who is sexually attracted to the opposite sex
of or relating to heterosexuality

1892, in C.G. Craddock’s translation of Krafft-Ebbing’s “Psychopathia Sexualis,” a hybrid; see hetero- + sexual. The noun is recorded from 1920, but not in common use until 1960s. Colloquial shortening hetero is attested from 1933.

heterosexual het·er·o·sex·u·al (hět’ə-rō-sěk’shōō-əl)
Sexually oriented to persons of the opposite sex. n.
A heterosexual person.


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  • Heterosis

    [het-uh-roh-sis] /ˌhɛt əˈroʊ sɪs/ noun, Genetics. 1. the increase in growth, size, fecundity, function, yield, or other characters in hybrids over those of the parents. /ˌhɛtəˈrəʊsɪs/ noun 1. (biology) another name for hybrid vigour

  • Heterosocial

    /ˌhɛtərəʊˈsəʊʃəl/ adjective 1. relating to or denoting mixed-sex social relationships Compare homosocial

  • Heterosporous

    [het-uh-ros-puh-ruh s, het-er-uh-spawr-uh s, -spohr-] /ˌhɛt əˈrɒs pə rəs, ˌhɛt ər əˈspɔr əs, -ˈspoʊr-/ adjective, Botany. 1. having more than one kind of spore. /ˌhɛtəˈrɒspərəs/ adjective 1. (of seed plants and some ferns and club mosses) producing megaspores and microspores Compare homosporous heterosporous (hět’ər-ə-spôr’əs, hět’ə-rŏs’pər-əs) Producing two types of spores differing in size and sex, […]

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