prothesis.
The prepending of phonemes at the beginning of a word without changing its morphological structure, as in Spanish esfera from Greek (via Latin) sphaera (“sphere”) (without prothesis the word would have become *sfera).
Meaning & usage
The prepending of phonemes at the beginning of a word without changing its morphological structure, as in Spanish esfera from Greek (via Latin) sphaera (“sphere”) (without prothesis the word would have become *sfera).
Where this word comes from
From Late Latin prothesis, prosthesis, alteration (dropping the ‘s’) from Ancient Greek πρόσθεσις (prósthesis, “addition, augmentation”), (English prosthesis) from προστίθημι (prostíthēmi, “to add”), from πρός (prós, “towards”) + τίθημι (títhēmi, “to place”), from Proto-Indo-European *próti, *préti + *dʰédʰeh₁- (“to be putting, to be placing”). However, often confused for a descendant of the Ancient Greek word πρόθεσις (próthesis, “a preposing, preposition”) (without the σ (s)), which is instead the source of a different term – see alternative etymology, below.
The preparation and preliminary oblation of the Eucharistic bread and wine in the Divine Liturgy of the Eastern Orthodox and Eastern Catholic Churches.
Credence table.
Where this word comes from
From Ancient Greek πρόθεσις (próthesis, “a preposing”), from προτίθημι (protíthēmi, “to prepose”), from πρό (pró, “before”) + τίθημι (títhēmi, “to place”), from Proto-Indo-European *pro- + *dʰédʰeh₁ti (“to be putting, to be placing”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.