Apheresis, the loss or removal of a sound at the beginning of a word.
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.
The prepending of phonemes at the beginning of a word without changing its morphological structure, as in Spanish esfera from Latin sphaera (“sphere”) (without prothesis the word would have become *sfera).