ACROAMATICS, esoteric lectures, i. e. lectures to the initiated.


ACROLEIN, a light volatile limpid liquid obtained by the destructive
distillation of fats.


ACROLITHS, statues of which only the extremities are of stone.


ACROP`OLIS, a fortified citadel commanding a city, and generally the
nucleus of it, specially the rocky eminence dominating Athens.


ACROTE`RIA, pedestals placed at the middle and the extremities of a
pediment to support a statue or other ornament, or the statue or ornament
itself.


ACTA DIURNA, a kind of gazette recording in a summary way daily
events, established at Rome in 131 B.C., and rendered official by Cæsar
in 50 B.C.


ACTA SANCTORUM, the lives of the saints in 62 vols. folio, begun in
the 17th century by the Jesuits, and carried on by the Bollandists.