1. One that signifies.
2. Linguistics A linguistic unit or pattern, such as a succession of speech sounds, written symbols, or gestures, that conveys meaning; a linguistic sign. The signifier of the concept "tree" is, in English, the string of speech sounds (t), (r), and (ē); in German, (b), (ou), and (m).
[Translation of French signifiant, present participle of signifier, to signify.]
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.