Ω is pronounced: o mi ga, which is the 24th Greek letter, and its capital is Ω. This letter has many meanings in mathematics and physics. It represents the angular velocity of sine function in mathematics, angular velocity in physics and mass fraction in chemistry.

Lowercase ω meaning

Physics: the symbol of angular velocity.

Chemistry: solute mass fraction.

Mathematics: the symbol of angular velocity, the symbol of weighted average weight.

Omega (TeX): Unicode version of the typesetting system TeX.

Omega navigation system is the first global radio navigation.