n.
Pronunciation: ' b ī - ə - ˌ t ī t
Function: noun
Etymology: German Biotit, from Jean B. Biot † 1862 French mathematician
Date: 1862
: a generally black or dark green form of mica that is a constituent of crystalline rocks and consists of a silicate of iron, magnesium, potassium, and aluminum
– bi · o · tit · ic \ ˌ b ī - ə - ' ti-tik \ adjective