tridymite
noun
trid·y·mite
ˈtridəˌmīt
plural -s
: a mineral SiO2 that is a silica, differs from quartz in its usually minute thin tabular orthorhombic forms of crystallization, and is found in cavities in trachyte and similar rocks (hardness 7, specific gravity 2.28–2.33)
Word History
Etymology
German tridymit, from Greek tridymos threefold (irregular from tri- three + didymos twin) + German -it -ite; from its common occurrence in trillings
- come over to
- come prima
- come rain or come shine
- come rain or shine
- come round
- come running
- come short of
- come sopra
- come through
- come to
- come to a bad end
- come to a grinding halt
- come to a halt
- come to a stop
- come to an end
- come to an understanding
- come to blows
- come to grief
- come to grips with
- come to jesus moment
- come to jesus moments
- come to life
- come to light
- come to mind
- come to naught