1. Any of a class of organic compounds, derived from amino acids, found in some plant tumours


  1. To have or express an opinion; to state as an opinion; to suppose, consider (that).
    I opined that matters would soon become considerably worse.
    ''"Your decisions," she opined, "have been unfailingly disastrous for this company."
  2. To give one's formal opinion (on or upon something).
    I had to opine on the situation because I thought a different perspective was in order.

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