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[proth-uh-sis] /ˈprɒθ ə sɪs/
noun, plural protheses
[proth-uh-seez] /ˈprɒθ əˌsiz/ (Show IPA)
the addition of a sound or syllable at the beginning of a word, as in Spanish escala “ladder” from Latin scala.
Eastern Church.
  1. Also called proskomide. the preparation and preliminary oblation of the Eucharistic elements.
  2. the table on which this is done.
  3. the part of the sanctuary or bema where this table stands.
(often initial capital letter) Greek Antiquity. a representation of a dead person lying in state.
Origin of prothesis
1665-75; < Late Latin < Greek próthesis a putting before. See pro-2, thesis
Related forms
[pruh-thet-ik] /prəˈθɛt ɪk/ (Show IPA),
prothetically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for prothesis


a process in the development of a language by which a phoneme or syllable is prefixed to a word to facilitate pronunciation: Latin ``scala'' gives Spanish ``escala'' by prothesis
(Eastern Orthodox Church) the solemn preparation of the Eucharistic elements before consecration
Derived Forms
prothetic (prəˈθɛtɪk) adjective
prothetically, adverb
Word Origin
C16: via Late Latin from Greek: a setting out in public, from pro- forth + thesis a placing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for prothesis

from Greek prothesis "a placing before, a placing in public," from pro (see pro-) + thesis (see thesis). In ecclesiastical sense from 1670s; grammatical from 1870. Related: Prothetic (1835 in grammar); prothetical; prothetically.

Online Etymology Dictionary, © 2010 Douglas Harper
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