duc·tile (dŭktəl, -tīl′)
1. Easily drawn into wire or hammered thin: ductile metals.
2. Easily molded or shaped. See Synonyms at malleable.
3. Capable of being readily persuaded or influenced; tractable: a ductile young mind.
[Middle English ductil, from Old French, from Latin ductilis, from ductus, past participle of dūcere, to lead; see deuk- in the Appendix of Indo-European roots.]
duc·tili·ty (-tĭlĭ-tē), duc′ti·li·bili·ty (-lə-bĭlĭ-tē) n.
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.