UBIQUITY, n. The gift or power of being in all places at one time,

UBIQUITY, n. The gift or power of being in all places at one time,
but not in all places at all times, which is omnipresence, an
attribute of God and the luminiferous ether only. This important
distinction between ubiquity and omnipresence was not clear to the
mediaeval Church and there was much bloodshed about it. Certain
Lutherans, who affirmed the presence everywhere of Christ's body were
known as Ubiquitarians. For this error they were doubtless damned,
for Christ's body is present only in the eucharist, though that
sacrament may be performed in more than one place simultaneously. In
recent times ubiquity has not always been understood -- not even by
Sir Boyle Roche, for example, who held that a man cannot be in two
places at once unless he is a bird.
-- Ambrose Bierce, "The Devil's Dictionary"