1. An exposition of a given subject delivered before an audience or class, as for the purpose of instruction.
2. An earnest admonition or reproof; a reprimand.
v. lec·tured, lec·tur·ing, lec·tures
To deliver a lecture or series of lectures.
1. To deliver a lecture to (a class or audience).
2. To admonish or reprove earnestly, often at length: always lecturing me about my manners.
[Middle English, a reading, from Old French, from Medieval Latin lēctūra, from Latin lēctus, past participle of legere, to read; see leg- 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.