Small fat globules composed of protein and lipid (fat) which are combined in the lining of the intestine.

Chylomicrons are found in the blood and lymphatic fluid where they function to transport fat from its port of entry in the intestine to the liver and to adipose (fat) tissue. After a fatty meal, the blood is so full of chylomicrons that it looks milky.

The word chylomicron is made up of chylo-, "milky" + micron, "small"; meaning, "small milky (globules)". Chylomicrons are synthesized (made) in the mucosa (the lining) of the intestine.