What is the meaning of solarize?

verb

• Reverse some of the tones of (a negative or print) and introduce pronounced outlines of highlights, by exposing it briefly to light, then washing and redeveloping it.
  • synonyms: solarise
• Become overexposed.
  • usage: "The film solarized"
  • synonyms: solarise
• Overexpose to sunlight.
  • usage: "be careful not to solarize the photographic film"
  • synonyms: solarise
• Expose to the rays of the sun or affect by exposure to the sun.
  • usage: "insolated paper may turn yellow and crumble"; "These herbs suffer when sunned"
  • synonyms: sun, insolate, solarise