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Webster 1913 Edition
Trilithon
Tril′i-thon
(trĭl′ĭ-thŏn)
, Noun.
pl.
Trilithons
(#)
. [NL., fr. Gr.[GREEK] of or with three stones; [GREEK] (see
Tri-
) + [GREEK] stone.] (Archaeol.)
A monument consisting of three stones; especially, such a monument forming a kind of doorway, as among the ancient Celts.