adjective. Taking place or originating in a corresponding part on an opposite side.

Occurring on the opposite side.

adjective. On the opposite side of the body.

adjective. on or relating to the opposite side (of the body)

"A study published Monday in the journal Cancer found that among women in New York state who had cancer in one breast, the number who opted to have the other breast removed, called contralateral prophylactic mastectomy, more than doubled between 1995 and 2005, with nearly 5,000 women opting for the procedure during that period."

ipsilateral  

3galt-deficient  appendicular  ductless  femoral  gluteal