IPA: /prəʊˈθiːsɪs/
KK: /proʊˈθiːsɪs/
The act of adding a sound or syllable at the beginning of a word, or a table used for preparing bread and wine in the Eastern Orthodox Church.
In linguistics, prothesis refers to the addition of a phoneme at the start of a word.
Prothesis is formed from "pro-" (meaning before) and "thesis" (from Greek "thesis", meaning placing or position). The word refers to the act of placing something before or in front, often used in a medical context to describe an artificial device that is placed to replace a missing body part.
Think of 'pro-' meaning 'before' and 'thesis' meaning 'placing' — this helps you remember that a prothesis is something placed before or in front, like an artificial limb.