Clarkia.
clavicle
Clumber A Clumber is a type of spaniel (Dog). Clam Clown fish Cleaner-wrasse
The letters cl stand for centilitre - there are 100 centilitres in one litre.
CL stands for cover letters and seems to have no connection to the number 500. In roman nuerals the letters CL mean 150 and not 500. The two again having nothing to do with each other.
Chemical symbols such as Cl for chlorine and Si for silicon have two letters because they are derived from the names of the elements in Latin or their English names. This system helps to uniquely identify each element without confusion.
cl = Centi litres There is 100 centi litres in a litre.
Action words that begin with cl include classify, clarify, cleaned, and many others.
5150 = (V)CL which are normally in capital letters
funky way of writin dude, luks better with fonts that put the letters closer together... cl u cl e
Clover, clever, closer and closer is a 6 letter word. They begin with CL and end with R.
The numbers and letters probably refer to some legal statute but without knowing which state this question comes from it is impossible to guess what it might mean.
It's a mixture of two atomic letters; Na (sodium) and Cl (chloride). Hope that helps!