Eta (lowercase)

Used to represent efficiency and viscosity in physics.

Unicode

U+03B7

HTML Entity

CSS Value

\03B7

More Greek Letters Symbols

Alpha (lowercase)

Beta (lowercase)

Gamma (lowercase)

Gamma (uppercase)

Delta (lowercase)

Epsilon (lowercase)

Zeta (lowercase)

Theta (lowercase)

Iota (lowercase)

Kappa (lowercase)

Lambda (lowercase)

Mu (lowercase)