The mechanism of action of probiotics (e.g., having an impact on the intestinal microbiota or enhancing immune function) was dropped from the definition to encompass health effects due to novel mechanisms and to allow application of the term before the mechanism is confirmed.
Noun. 1. electronegativity - (chemistry) the tendency of an atom or radical to attract electrons in the formation of an ionic bond. negativity.
atom's bonding capacity corresponding to the number of covalent bonds the atom can form; the valence usually equals the number of unpaired electrons in the valence shell Define: Electronegativity the attraction of a particular kind of atom for the electrons of a covalent bond; oxygen is one of the most electronegative elements