specific steriod hormone definition
Medical Definition of STEROID HORMONE. : any of numerous hormones (as estrogen, testosterone, cortisone, and aldosterone) having the characteristic ring structure of steroids and formed in the body from cholesterol. What made you want to look up steroid hormone? any of numerous hormones (as estrogen, testosterone, cortisone, and aldosterone) having the characteristic ring structure of steroids and formed in the body from cholesterol.