ANTELUCAN
Source: 524, 567
ANTELU'CAN, adjective [Latin antelucanus, of ante, before, and lux, light.]Being before light; a word applied to assemblies of christians, in ancient times of persecution, held before light in the morning.
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An′te‐lu″can (�), a. [[L. antelucanus; ante + lux light.]] Held or being before light; — a word applied to assemblies of Christians, in ancient times of persecution, held before light in the morning. “Antelucan worship.” De Quincey.