from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. having both glass and crystalline components
from the GNU version of the Collaborative International Dictionary of English
- adj. Partly crystalline; -- said of rock which consists of crystals imbedded in a glassy ground mass.
from The Century Dictionary and Cyclopedia
- In petrography, partly crystalline, partly glassy: a texture frequently developed in volcanic lavas. Also hemicrystalline. See merocrystalline.
hypo- + crystalline (Wiktionary)