1. Neutral chemical compound, especially:
a. Neutral carbohydrate: inulin.
b. Protein or protein derivative: albumin.
c. Lipid or lipid derivative: lecithin.
d. Enzyme: pancreatin.
e. Glycoside: chitin.
2. A pharmaceutical: rifampin.
3. An antibiotic: penicillin.
4. Antigen: tuberculin.
5. Variant of -ine2.
[Variant of -INE2.]
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 Appendicies
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.