12-Letter Words Containing: I,O,S,M,O,L,S

• The tendency to describe things in psychological or subjective terms

• compulsiveness about working

• a system of naming the notes of a musical scale by syllables instead of letters

• singing using solfa syllables to denote the notes of the scale of C major

• an expert on mythology

• the phenomenon of different colors appearing when certain crystals are viewed from different directions

• a fossil that must be studied microscopically