\A`gar-a"gar\, n. [Ceylonese local name.]
A fucus or seaweed much used in the East for soups and
jellies; Ceylon moss ({Gracilaria lichenoides}).

\A`gar-a"gar\, n.
A gelatinlike substance, or a solution of it, prepared from
certain seaweeds containing gelose, and used in the
artificial cultivation of bacteria; -- often called {agar},
by abbreviation.