tr.v. per·fused, per·fus·ing, per·fus·es
1. To coat or permeate with liquid, color, or light; suffuse.
2. To pour or diffuse (a liquid, for example) over or through something.
[Latin perfundere, perfūs-, to pour over : per-, per- + fundere, to pour; see gheu- in the Appendix of Indo-European roots.]
per·fusive (pər-fysĭv, -zĭv) adj.
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.