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1. Of, relating to, resembling, or having the nature of glass; glassy.
2. Obtained or made from glass.
3. Of or relating to the vitreous humor.
The vitreous humor.

[From Latin vitreus, from vitrum, glass.]

vit′re·os′i·ty (-ŏs′ĭ-tē), vit′re·ous·ness (-əs-nĭs) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


a state or quality resembling that of glass, as in hardness, brittleness, transparency, glossiness, etc. — vitreous, adj.
See also: Materials, Properties of
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The objective of this study was to evaluate the effectiveness of two selection methods, honeycomb selection and panicle-to-row selection, for yield and four quality traits (total milling yield, grain vitreosity, grain length and grain length/width ratio) in two [F.sub.2] rice populations.
These plants were further evaluated for four quality traits: total milling yield, grain vitreosity, grain length, and grain length/width ratio.
Chemical basis for hardness and vitreosity in the wheat kernel.