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i·con·o·clast (ī-kŏnə-klăst)
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n.
1. One who attacks and seeks to overthrow traditional or popular ideas or institutions.
2. One who destroys sacred religious images.

[French iconoclaste, from Medieval Greek eikonoklastēs, smasher of religious images : eikono-, icono- + Greek -klastēs, breaker (from klān, klas-, to break).]

i·cono·clastic adj.
i·cono·clasti·cal·ly adv.

Word History: Among the Ten Commandments found in the Bible is the following: "Thou shalt not make unto thee a graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth." In the 8th and 9th centuries, these words inspired some Christians of the Byzantine Empire to destroy religious images such as paintings and sculptures of Jesus, the Virgin Mary, and the saints. The Medieval Greek word for a person who destroyed such images was eikonoklastēs, formed from the elements eikōn, "image, likeness," and -klastēs, "breaker," and the Medieval Greek word is the source of the English word iconoclast. In addition to simply destroying many paintings and sculptures, the Medieval Greek iconoclasts also sought to have them barred from display and veneration. In English, the word iconoclast was originally used in reference to these Byzantine iconoclasts. During the Protestant Reformation, however, images in churches were again felt to be idolatrous and were once more banned and destroyed, and the word iconoclast came to be used of the Protestant opponents of graven images, too. In the 19th century, iconoclast took on the secular sense that it has today.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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:

    Indo-European Roots

    Semitic Roots

    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.