in·qui·line (ĭnkwə-līn′, -lĭn, ĭng-)
An animal that characteristically lives commensally in the nest, burrow, or dwelling place of an animal of another species.
Being or living as an inquiline.
[Latin inquilīnus, lodger, tenant : in-, in; see IN-2 + colere, to inhabit; see kwel-1 in the Appendix of Indo-European roots.]
inqui·lin·ism (-lə-nĭz′əm), in′qui·lini·ty (-lĭnĭ-tē) n.
in′qui·linous (-līnəs) adj.
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.