al·ka·line (ălkə-lĭn, -līn′)
1. Of, relating to, or containing an alkali.
a. Having a pH greater than 7.
b. Having a relatively low concentration of hydrogen ions.
3. Of or relating to a common disposable battery made of zinc and manganese dioxide.
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.