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Webster 1913 Edition

Adj.

[L.

vitrum

glass.]

Having the nature and qualities of glass; glasslike; – distinguished from

ceramic

vitric ‎(comparative more vitric, superlative most vitric)

glassy; vitreous
- 2000 May 12, Leo Gabunia et al., “Earliest Pleistocene Hominid Cranial Remains from Dmanisi, Republic of Georgia: Taxonomy, Geological Setting, and Age”, in Science, volume 288, number 5468, DOI:10.1126/science.288.5468.1019, pages 1019-1025:
  This flow overlies fossil vertebrate-bearing volcaniclastic sediments that include a grayish-black vitric tuff that may be correlative with the unit A1 tuff at Dmanisi.