What does Amino acid mean?

Amino acid meaning in Medical Dictionary

One of the20 blocks from which proteins tend to be assembled. Isoleucine, leucine, lysine, phenylalanine, threonine, tryptophan, and valine are deemed 'essential' amino acids considering that the human anatomy cannot make them as well as must be obtained inside diet. Proteins are occasionally taken orally in product form.

Amino acid meaning in General Dictionary

organic substances containing an amino team and a carboxylic acid group

Amino acid meaning in Chemistry Dictionary

substance containing both an amino and a carboxylic acid group.The --NH2group.