valence shell in English dictionary valence shell Meanings and definitions of "valence shell" (chemistry) the outermost shell of electrons in an atom; these electrons take part in bonding with other atoms noun (chemistry) the outermost shell of electrons in an atom; these electrons take part in bonding with other atoms more Grammar and declension of valence shell valence shell ( plural valence shells) valence shell (plural valence shells) more Sample sentences with "valence shell" Declension Stem Match words all exact any Try again Available translations French German Irish Polish Tamil Authors