sedilia

se·di·le  (s-dl)

n. pl. se·di·lia (-dly, -dl-)

One of a set of seats, usually three, provided in some Roman Catholic and Anglican churches for the use of the presiding clergy, traditionally placed on the epistle side of the choir near the altar, and in Gothic-style churches often built into the wall.

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[Latin sedle, seat, from sedre, to sit; see sed- in Indo-European roots.]

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sedilia [sɛˈdaɪlɪə]

n

(Christianity / Ecclesiastical Terms) (functioning as singular) the group of three seats, each called a sedile (sɛˈdaɪlɪ), often recessed, on the south side of a sanctuary where the celebrant and ministers sit at certain points during High Mass

[from Latin, from sedīle a chair, from sedēre to sit]