What is the meaning of surveying?

noun

• The practice of measuring angles and distances on the ground so that they can be accurately plotted on a map.
  • usage: "he studied surveying at college"

verb

• Consider in a comprehensive way.
  • usage: "He appraised the situation carefully before acting"
  • synonyms: survey, appraise
• Look over carefully or inspect.
  • usage: "He surveyed his new classmates"
  • synonyms: survey
• Keep under surveillance.
  • usage: "The police had been following him for weeks but they could not prove his involvement in the bombing"
  • synonyms: surveil, follow, survey
• Hold a review (of troops.
  • synonyms: review, go over, survey
• Make a survey of; for statistical purposes.
  • synonyms: survey
• Plot a map of (land. ).
  • synonyms: survey