intr.v. pul·sat·ed, pul·sat·ing, pul·sates
1. To expand and contract rhythmically: could hear the heart pulsating.
2. To produce rhythmic sounds or other vibrations: music pulsating throughout the room.
[Latin pulsāre, pulsāt-, frequentative of pellere, to beat; see pel-5 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.