climate change

: a region of the earth having specified climatic conditions

: the average course or condition of the weather at a place usually over a period of years as exhibited by temperature, wind velocity, and precipitation

: the prevailing set of conditions (as of temperature and humidity) indoors

: to make different in some particular : alter

: to make radically different : transform

: to give a different position, course, or direction to

: the act, process, or result of changing: such as

: alteration

: transformation