Definitions

1. noun

A protein found in egg whites that binds to vitamin B7 (biotin) and is often used in biochemical research.

“The scientist used avidin in her experiment to study the effects of biotin deficiency on cells.”

2. noun

A glycoprotein that has a very high affinity for biotin.

“Avidin is used as a marker in immunohistochemistry to detect the presence of biotin.”