• Definition for "ethinylestradiol"
    • A derivative of 17β-estradiol, the major endogenous estrogen…
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  • Sentence for "ethinylestradiol"
    • As treated wastewater flows into rivers…
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ethinylestradiol definition

  • noun:
    • A derivative of 17β-estradiol, the major endogenous estrogen in people, found in oral contraceptives.
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