noun

• (countable) A particular discipline or branch of knowledge that is natural, measurable or consisting of systematic principles rather than intuition or technical skill.
  "Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric, gross domestic product (GDP), is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is scrutinised down to tenths of a percentage point every month."
• (uncountable, archaic) Knowledge gained through study or practice; mastery of a particular discipline or area.
  "For by his mightie Science he had seene / The secret vertue of that weapon keene […]"
• (now only theology) The fact of knowing something; knowledge or understanding of a truth.
  "O Timothy, keep that which is committed to thy trust, avoiding vain and profane babblings, and oppositions of science falsely so called: Which some professing have erred concerning the faith. Grace be with thee. Amen."
• (uncountable) The collective discipline of study or learning acquired through the scientific method; the sum of knowledge gained from such methods and discipline.
  "‘I always ask leave, in the interests of science, to measure the crania of those going out there,’ he said."

verb

• (transitive, dated) To cause to become versed in science; to make skilled; to instruct.
  "I mock'd at all religious Fear, Deep-scienced in the mazy Lore Of mad Philosophy"
• (transitive, colloquial, humorous) To use science to solve a problem.