dahl·ia (dălyə, däl-, dāl-)
Any of several tuberous-rooted plants of the genus Dahlia of the composite family, native to Mexico, Central America, and northern South America and cultivated for their showy, colorful flower heads.
[New Latin Dahlia, genus name, after Anders Dahl (1751-1787), Swedish botanist.]
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.