What is the meaning of nauseating?

verb

• Upset and make nauseated.
  • usage: "The smell of the food turned the pregnant woman's stomach"; "The mold on the food sickened the diners"
  • synonyms: sicken, nauseate, turn one's stomach
• Cause aversion in; offend the moral sense of.
  • usage: "The pornographic pictures sickened us"
  • synonyms: disgust, revolt, nauseate, sicken, churn up

adjective

• Causing or able to cause nausea.
  • usage: "a nauseating smell"; "nauseous offal"; "a sickening stench"
  • synonyms: nauseous, noisome, queasy, loathsome, offensive, sickening, vile