1. Plural of ionicity; the degree to which a chemical bond or compound exhibits ionic character, typically measured on a scale from purely covalent to purely ionic.
Usage: chemistry; technical term

Examples

• The ionicities of different metal halides vary depending on the electronegativity difference between the atoms.
• Chemists compare the ionicities of compounds to predict their solubility and melting points.
• The ionicities of sodium chloride and hydrogen chloride differ significantly due to their different bonding types.
• Understanding ionicities helps explain why some compounds conduct electricity in solution while others do not.