centi is a prefix used in the metric measurement system used in most countries around the world.
centi = 1/100 or 0.01 (hundredth)
eg A centimetre is 1/100 of a metre - a metre broken into 100 equal parts.
eg A centilitre is 1/100 of a litre - a litre of liquid broken into 100 equal parts.
eg A centigram is 1/100 of a gram - a gram broken into 100 equal parts.
1 metre (m) = 100 centimetres (cm)
1 litre (L) = 100 centilitres (cL)
1 gram (g) = 100 centigrams (cg)