from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An amino acid, CH2OHCH(NH2)COOH, that is a common constituent of many proteins.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A nonessential amino acid, CH2OH.CH(NH2)COOH, found in most animal proteins, especially silk.
from the GNU version of the Collaborative International Dictionary of English
- n. one of the natural L-amino acids, obtainable as a white crystalline nitrogenous substance by the action of dilute sulphuric acid on silk gelatin. It is found in many proteins, and, having a free primary hydroxyl group on the side chain, is involved in the catalytic action at the active site of some enzymes, such as proteases. The IUPAC abbreviation for serine in protein sequences is Ser. Chemically it is 2-amino-3-hydroxy-propanoic acid (C3H7NO3), HO.CH2.CH(NH2).COOH.
from The Century Dictionary and Cyclopedia
- n. A colorless compound, HOCH2-CH(NH2)COOH, prepared by the action of dilute sulphuric acid on sericin. It forms monoclinic crystals, and is also called a-amino-hyaracrylic acid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a sweetish crystalline amino acid involved in the synthesis by the body of cysteine
ser(icin) + -ine2.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin sericus silken. (Wiktionary)