Definition of arca
1 plural arcae \-ˌkī, -ˌsē\ [Latin] : a chest or strong box used in ancient times as a receptacle for money or valuables and also by early Christians for reserving the consecrated bread of the Eucharist
2 capitalized : a genus (the type of the family Arcidae) of bivalve mollusks comprising the ark shells and blood clams
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Origin and Etymology of arca
New Latin, from Latin, chest, box — more at ark
Learn More about arca
Spanish Central: Translation of arca
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