a. The observation, identification, description, experimental investigation, and theoretical explanation of phenomena: new advances in science and technology.
b. Such activities restricted to a class of natural phenomena: the science of astronomy.
2. A systematic method or body of knowledge in a given area: the science of marketing.
3. Archaic Knowledge, especially that gained through experience.
[Middle English, knowledge, learning, from Old French, from Latin scientia, from sciēns, scient-, present participle of scīre, to know; see skei- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.