† metacinnamenen.
Chemistry. Obsolete.
A polymerized form of styrene, occurring as an amorphous solid.
ΚΠ
1857 W. A. Miller Elements Chem. III. vii. 478 It [sc. balsam of Peru]..contains a peculiar resin and two other closely related substances, viz. cinnamic acid, and metacinnamene, or styracin.
1879 H. Watts Dict. Chem. (new ed.) I. 982 Metacinnamene, this is the solid substance into which cinnamene or styrol is converted by the action of heat.
1886 Athenæum 30 Jan. 172/3 Metacinnamene, a highly refracting glass-like solid, obtained by the action of light or heat upon cinnamene.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2019).
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n.1857