Pseudo-symmetry
Pronunciation : Pseu`do-sym"me*try
Part of Speech : n.
Etymology : [Pseudo- + symmetry.] (Crystallog.)
Definition : Defn: A kind of symmetry characteristic of certain crystals which from twinning, or other causes, come to resemble forms of a system other than that to which they belong, as the apparently hexagonal prisms of aragonite.
Source : Webster's Unabridged Dictionary, 1913