A prefecture of Japan. / The capital city of Kyoto Prefecture, Japan, and the country's former capital. / (international law) The Kyoto Protocol.

(international law) The Kyoto Protocol to the United Nations Framework Convention on Climate Change: an amendment to the international treaty on climate change, assigning mandatory targets for the reduction of greenhouse gas emissions to signatory nations.

plural of kyotorphin

(biochemistry) A neuroactive dipeptide which plays a role in pain regulation in the brain.