in antiquity, a measure used by the ancients, equal to one-eighth of our pint. It seems to have acquired its name from a vessel in which acetum or vinegar was brought to their tables, and which probably contained about this quantity.

in anatomy, a cavity in any bone for receiving the protuberant head of another, and there-

by forming that species of articulation called ENARTHROSION.

in botany, the trivial name of a species of the pezzia, or cup-pezzia, a genus belonging to the cryptogamia fungi of Linnaeus. It has got the name of acetalbum, from the resemblance its leaves bear to a cup. See PEZIZA.