a combining form meaning “glass,” used in the formation of compound words: hyaloplasm.

Also especially before a vowel, hyal-.

Origin of hyalo-

< Greek, combining form of hýalos glass
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for hyalo-


before a vowel hyal-

combining form

of, relating to, or resembling glasshyaloplasm

Word Origin for hyalo-

from Greek 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 hyalo-

word-forming element meaning "of glass; glass-like, transparent," from Greek hyalos "glass, clear alabaster," apparently a non-Greek word, said to be of Egyptian origin.

Online Etymology Dictionary, © 2010 Douglas Harper

hyalo- in Medicine



Glassy; hyaline:hyaloplasm.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.