[noun hahy-uh-leen, -lin; adjective hahy-uh-lin, -lahyn]


Also hy·a·lin [hahy-uh-lin] /ˈhaɪ ə lɪn/. Biochemistry.
  1. a horny substance found in hydatid cysts, closely resembling chitin.
  2. a structureless, transparent substance found in cartilage, the eye, etc., resulting from the pathological degeneration of tissue.
something glassy or transparent.


of or relating to hyaline.
glassy or transparent.
of or relating to glass.
amorphous; not crystalline.

Origin of hyaline

1655–65; < Late Latin hyalinus < Greek hyálinos of glass. See hyal-, -ine1
Related formssub·hy·a·lin, adjectivesub·hy·a·line, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hyaline

Historical Examples of hyaline

British Dictionary definitions for hyaline



biology clear and translucent, with no fibres or granules
archaic transparent


archaic a glassy transparent surface

Word Origin for hyaline

C17: from Late Latin hyalinus, from Greek hualinos of glass, from hualos glass
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for hyaline

1660s, from Latin hyalinus, from Greek hyalinos "of glass or crystal," from hyalos "glass" (see hyalo-).

Online Etymology Dictionary, © 2010 Douglas Harper

hyaline in Medicine


[hīə-lĭn, -līn′]


Resembling glass, as in translucence or transparency; glassy.


Something that is translucent or transparent.
Variant ofhyalin
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.