What is the meaning of saturated?

verb

• Cause (a chemical compound, vapour, solution, magnetic material) to unite with the greatest possible amount of another substance.
  • synonyms: saturate
• Infuse or fill completely.
  • usage: "Impregnate the cloth with alcohol"
  • synonyms: impregnate, saturate

adjective

• Being the most concentrated solution possible at a given temperature; unable to dissolve still more of a substance.
  • usage: "a saturated solution"
  • synonyms: concentrated
• Used especially of organic compounds; having all available valence bonds filled.
  • usage: "saturated fats"
• Of color. ( being chromatically pure; not diluted with white or grey or black).
  • synonyms: pure