For the writer (seller) of a call option, it represents an obligation to sell the underlying security at the strike price if the option is exercised. The call option writer is paid a premium for taking on the risk associated with the obligation.
Definition of gonad. : a reproductive gland (as an ovary or testis) that produces gametes.
Medical Definition of hypogonadism. 1  1: functional incompetence of the gonads especially in the male with subnormal or impaired production of hormones and germ cells. 2  2: an abnormal condition (as Klinefelter's syndrome) involving gonadal incompetence.