What is the meaning of dating?

noun

• Use of chemical analysis to estimate the age of geological specimens.
  • synonyms: geological dating

verb

• Go on a date with.
  • usage: "Tonight she is dating a former high school sweetheart"
  • synonyms: date
• Stamp with a date.
  • usage: "The package is dated November 24"
  • synonyms: date, date stamp
• Assign a date to; determine the (probable) date of.
  • usage: "Scientists often cannot date precisely archeological or prehistorical findings"
  • synonyms: date
• Date regularly; have a steady relationship with.
  • usage: "Did you know that she is seeing an older man"; "He is dating his former wife again"
  • synonyms: go steady, go out, date, see
• Provide with a dateline; mark with a date.
  • usage: "She wrote the letter on Monday but she dated it Saturday so as not to reveal that she procrastinated"
  • synonyms: date