|kad.ˌī|änik, -aˌtī-, -ēk adjective
1. : relating to or consisting of cations
2. of a chemical compound : characterized by an active cation, especially by a surface-active cation (as a large hydrophobic organic group)
cationic germicide
cationic surface-active agent
• cat·ion·i·cal·ly -ə̇k(ə)lē, -ēk-, -li adverb