1. (adjective) experienced at secondhand

• secondary

2. (adjective) occurring in an abnormal part of the body instead of the usual site involved in that function

• abnormal
• unnatural

3. (adjective) suffered or done by one person as a substitute for another

• exchangeable

1. (adjective) occurring in an abnormal part of the body instead of the usual site involved in that function

• medical specialty
• medicine