tr. & intr.v. fil·trat·ed, fil·trat·ing, fil·trates
To put or go through a filter.
Material, especially liquid, that has passed through a filter.
[New Latin filtrāre, filtrāt-, to filter, from Medieval Latin filtrum, filter; see FILTER.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.