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.
Report Abuse. the electronegativity difference in oxygen and hydrogen atoms and the structure of water molecule gives it a orientation in which oxygen atom behaves as a negative pole and the two hydrogen getting some positive charge so placed that it behaves as having two poles one positivelycharged and another negativ.