the radical -NH2
"The amino group attached to the carbon chain determines whether the molecule acts as a base or an acid."
The amine functional group.
"The amino acid contains an amino functional group attached to its carbon backbone."
In plain English: An amino is not actually a noun; it's part of a word that describes tiny building blocks your body uses to make proteins and other important chemicals.
"The doctor warned that an amino deficiency could slow down muscle recovery after his workout."
Relating to an amine.
"The amino group in the organic compound reacts readily with acids."
The word comes from the Greek root aminon, which originally referred to a nitrogen-containing organic compound known as an amine. It entered English through scientific terminology derived from ammonia and the suffix -ine to describe these specific chemical substances.