zeranolhttp://www.oed.com/dictionary/zeranol_n%3Ftab%3Dmeaning_and_usezeranol, n.
Revised 2018

zeranolnoun

Veterinary Medicine.
  1. 1971–
    A synthetic oestrogen used as a growth promoter in livestock. Also called zearalanol.
    Zeranol is a lactone of resorcylic acid. Formula: C18H26O5.
    1. 1971
      One lot of steers on each protein level was implanted with 36 mg zeranol on days 7 and 84 of the 169-day trial.
      Journal Animal Science vol. 33 275
    2. 1988
      In America, five growth hormones are still widely used in meat production, testosterone, estradiol, progesterone, zeranol and trenbolone—the last two of which are synthetic.
      Daily Telegraph 28 December 1/3
    3. 2012
      Beef and liver samples collected from government cooperative supermarkets and private butchers were free of zeranol.
      R. Blair, Organic Production & Food Quality vi. 124

zeranol, n. was revised in June 2018.

zeranol, n. was last modified in July 2023.