serum

4 definitions • 2 examples

the thin yellowish liquid part of the blood :

cholesterol levels in blood serum

serum taken from an animal's blood and put into a human in order to fight an infection or a poison:

an anti-venom serum

a substance in beauty products that is designed to improve your hair or skin and make it less dry

the watery, colorless part of the blood, or this liquid taken from blood, used for medical purposes