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词汇 gonad
释义

Definition of gonad in English:

gonad

noun ˈɡəʊnadˈɡoʊnæd
Zoology Physiology
  • 1An organ that produces gametes; a testis or ovary.

    〔生理,动〕性腺,生殖腺;睾丸;卵巢

    Example sentencesExamples
    • To compensate, internal organs such as the gizzard, gonads, and intestine may shrink.
    • As adults they lack appendages, segmentation, and all internal organs except gonads and the remains of the nervous system.
    • Fish were scored as intersexes when at least one of the gonads was an ovotestis or when one ovary and one testis were observed simultaneously.
    • It is known as a gonadotrophic hormone as it affects the gonads (testes and ovaries) in mammals.
    • Whether the gonads become ovaries or testes is determined by the chromosomes received from the parents at the time of conception.
    1. 1.1gonadsvulgar slang A man's testicles or genitals.

Derivatives

  • gonadal

  • adjectiveɡə(ʊ)ˈneɪd(ə)l
    • For example, gonadotropins that are produced by the hypothalamic-pituitary gland stimulate secretion of gonadal steroids.
      Example sentencesExamples
      • Females develop an extrusion of the gonadal papilla and a distended abdomen when gravid.
      • In birds and mammals, gonadal steroids can directly affect sensory functions, selective attention, persistence of attention, and have independent rewarding properties in the brain.
      • Chronically stressed mammals produce hormones called glucocorticoids, which can suppress certain immune-system and gonadal functions when the hormones remain elevated.
      • Nutrition, exercise, gonadal steroids, and growth hormone and body composition all play a role in bone density.

Origin

Late 19th century: from modern Latin gonades, plural of gonas, from Greek gonē 'generation, seed'.

Definition of gonad in US English:

gonad

nounˈɡōnadˈɡoʊnæd
Physiology Zoology
  • 1An organ that produces gametes; a testis or ovary.

    〔生理,动〕性腺,生殖腺;睾丸;卵巢

    Example sentencesExamples
    • As adults they lack appendages, segmentation, and all internal organs except gonads and the remains of the nervous system.
    • To compensate, internal organs such as the gizzard, gonads, and intestine may shrink.
    • It is known as a gonadotrophic hormone as it affects the gonads (testes and ovaries) in mammals.
    • Fish were scored as intersexes when at least one of the gonads was an ovotestis or when one ovary and one testis were observed simultaneously.
    • Whether the gonads become ovaries or testes is determined by the chromosomes received from the parents at the time of conception.
    1. 1.1gonadsvulgar slang A man's testicles or genitals.

Origin

Late 19th century: from modern Latin gonades, plural of gonas, from Greek gonē ‘generation, seed’.

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