1. Of, relating to, or resembling milk.
2. Anatomy Of or relating to any of numerous minute intestinal lymph-carrying vessels that convey chyle from the intestine to lymphatic circulation and thereby to the thoracic duct.
A lacteal vessel.
[From Latin lacteus, from lac, lact-, milk; see melg- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.