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.
2. Polar-unequal sharing of electrons. To understand why atoms share or don't share electrons equally we turn to a concept called electronegativity. Electronegativity-is the attraction atoms have for bonding electrons.