The abbreviation "cl" stands for centiliters when it comes to measurements. A centiliter is a unit of volume, and it is the same as 10 milliliters or 0.01 liters.
The prefix "centi" is put before a unit of measurement to mean 1/100 of the unit. Therefore, a centiliter is equivalent to 1/100 of a liter. Milliliters and liters are more commonly seen measures of volume, but one can easily convert centiliters to either of these units. Multiplying the number of centiliters by 10 gives the number of milliliters, and dividing the number of centiliters by 100 gives the number of liters.