cry·o·sur·ger·y 
(krī′ō-sûrjə-rē)
(krī′ō-sûrjə-rē)n.
The selective exposure of tissues to extreme cold, often by applying a probe containing liquid nitrogen, to bring about the destruction or elimination of abnormal cells.
cry′o·surgeon (-jən) n.
cry′o·surgi·cal (-jĭ-kəl) adj.