a. Capable of being handled, touched, or felt; tangible: "Anger rushed out in a palpable wave through his arms and legs" (Herman Wouk).
b. Medicine Capable of being felt by palpating: a palpable tumor.
[Middle English, from Old French, from Late Latin palpābilis, from Latin palpāre, to touch gently; see pāl- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.