[ noun hahy-uh-leen, -lin; adjective hahy-uh-lin, -lahyn ]
/ noun ˈhaɪ əˌlin, -lɪn; adjective ˈhaɪ ə lɪn, -ˌlaɪn /


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.

Nearby words

  1. hyacinthus,
  2. hyades,
  3. hyaena,
  4. hyal-,
  5. hyalin,
  6. hyaline body,
  7. hyaline cartilage,
  8. hyaline degeneration,
  9. hyaline membrane,
  10. hyaline membrane disease

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

British Dictionary definitions for hyaline


/ (ˈhaɪəlɪn) /


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

Medicine definitions for hyaline


[ 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.