• IPA: /ˈhaɪəlɪn/, /ˈhaɪəliːn/

hyaline

1. Glassy, transparent; amorphous.

hyaline

1. Anything glassy, translucent or transparent; the sea or sky.
   • 1667, John Milton, “Book 7”, in Paradise Lost. A Poem Written in Ten Books, London: Printed [by Samuel Simmons], and are to be sold by Peter Parker […] [a]nd by Robert Boulter […] [a]nd Matthias Walker, […], OCLC 228722708 ↗; republished as Paradise Lost in Ten Books: The Text Exactly Reproduced from the First Edition of 1667: […], London: Basil Montagu Pickering […], 1873, OCLC 230729554 ↗:

     The clear hyaline, the glassy sea.

   • Our blood runs amazed 'neath the calm hyaline.

2. (zoology, anatomy) A clear translucent substance in tissues.
3. (biochemistry) The main constituent of the walls of hydatid cysts; a nitrogenous body, which, by decomposition, yields a dextrogyrate sugar, susceptible to alcoholic fermentation.