vitreo-, vitre-, vitr- +
(Latin: glass; glassy; like glass)
The procedure involves devitrifiable glass becoming partly crystallized as it cools very slowly from the molten state.
Devitrification may also occur on the surface as a result of unsuccessful "annealing"* or accidental heating to a high temperature. It is not caused by chemical reaction between glass and its environment, which is known as "weathering".
*Annealing refers to the process of slowly cooling a completed object in an auxiliary part of a glass furnace, or in a separate furnace.
This is an integral part of glassmaking because if a hot glass object is allowed to cool too quickly, it will be highly strained by the time it reaches room temperature and indeed, it may break as it cools. Highly strained glasses break easily if subjected to mechanical or thermal shock.
Devitrification may also occur on the surface as a result of unsuccessful "annealing"* or accidental heating to a high temperature. It is not caused by chemical reaction between glass and its environment, which is known as "weathering".
*Annealing refers to the process of slowly cooling a completed object in an auxiliary part of a glass furnace, or in a separate furnace. This is an integral part of glassmaking because if a hot glass object is allowed to cool too quickly, it will be highly strained by the time it reaches room temperature and indeed, it may break as it cools. Highly strained glasses break easily if subjected to mechanical or thermal shock.
2. To cause (a glassy material) to become crystalline and brittle.
3. With reference to a volcanic rock or to a particle; to undergo a change in texture from glassy to crystalline.
2. Literally, "in glass", as in a test tube.
A test that is performed in vitro is one that is done in glass or plastic vessels in a laboratory.
In vitro is the opposite of in vivo (in a living organism).
The process of in vitro fertilization involves hormonally controlling the ovulatory process, removing ova (eggs) from the woman's ovaries, like in Jennifer's case, and letting sperm fertilize them in a fluid medium. The fertilized egg (zygote) is then transferred to Jennifer's uterus with the purpose of having a successful pregnancy.
2. Etymology: In vitro is Latin for "in glass", referring to the test tubes; however, neither glass nor test tubes are used, and the term refers generically to laboratory procedures. Babies that are born as a result of in vitro fertilization are sometimes called "test tube babies".2. A substance imperfectly vitrified.
2. A curtain of light and translucent material intended to be secured directly to the woodwork of a French casement window or a glazed door.
2. A coal lithotype characterized by a brilliant, glassy appearance, jet-black color, cubic cleavage, and conchoidal fracture; a component of bonded coal; pure coal.
More "glass" words are at this hyalo-, hyal- family unit.