1. Linguistics The addition of a phoneme or syllable at the beginning of a word, as in Spanish espina, “thorn,” from Latin spina.
a. The preparation of the bread and wine for the Eucharist.
b. The table used for this preparation.
pro·thet′ic (prŏ-thĕt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.