noun a poetic term for the sea or the atmosphere.
2. hyaline ·adj glassy; resembling glass; consisting of glass; transparent, like crystal.
3. hyaline ·noun the pellucid substance, present in cells in process of development, from which, according to some embryologists, the cell nucleous originates.
4. hyaline ·noun the main constituent of the walls of hydatid cysts; a nitrogenous body, which, by decomposition, yields a dextrogyrate sugar, susceptible of alcoholic fermentation.