Definition of "vitro" []

• In petrography, a prefix used to signify that a rock is glassy; in the quantitative system of classification of igneous rocks (see rock), indicating that the rock is megascopically glassy. Compare vitri-. (noun)

The Century Dictionary (Public Domain)

• "No more buying coverage for in vitro, mental health, chiropractic, etc."
• "Regarding health care, when Obama says race to the bottom, he means that he thinks all states should be forced to cover in vitro, chiropractic massage, pregnancy, mental health, etc."
• "Playtex and P&G also had competing in vitro tests of the braid."