Ly

ly
Abbreviation of Light Year.
Lye
Alternative name for Sodium Hydroxide.
Lyman Series
The series which describes the emission spectrum of hydrogen when electrons are jumping to the ground state.
Lys
Abbreviation of Lysine.
Lysine

HO2CCH(NH2)(CH2)4NH2

A naturally occurring amino acid with an amine group on its side chain.

Lysosomal Enzymes
Hydrolytic enzymes that can degrade any type of biological polymers.
Lysosome
An organelle that contains hydrolytic enzymes.