lu·bri·cious (l-brĭshəs) also lu·bri·cous (lbrĭ-kəs)
a. Full of or displaying sexual desire: "They fell immediately into an orgy of lubricious kissing" (Joseph Heller).
b. Sexually stimulating; salacious: a book of lubricious photographs.
2. Having a slippery or smooth quality: "Throughout the empire a lubricious glaze of venality came to coat every governmental surface" (Cullen Murphy).
[Alteration of lubricous, from Latin lūbricus, slippery; see sleubh- 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.