adjective
Glassy, transparent; amorphous.
noun
(poetic) Anything glassy, translucent or transparent; the sea or sky.
(zoology, anatomy) A clear translucent substance in tissues.
(biochemistry) The main constituent of the walls of hydatid cysts; a nitrogenous body, which, by decomposition, yields a dextrogyrate sugar, susceptible to alcoholic fermentation.