Definitions

1. noun

A chemical compound, a dipeptide of the amino acids glutamic acid and alanine, used as a by-product in the manufacture of other compounds.

“Theine is a compound used in the production of certain medicines.”

2. proper noun

A chemical compound also known as theine, a type of alkaloid, also called theine, an isomer of caffeine found in tea leaves.

“Theine is an alkaloid found in the leaves of the Camellia sinensis plant.”