aphidicide noun2 •Any man-made substance that kills aphids.Aphids can be controlled by spraying with a modern (targetted) aphidicide early in the season, as a routine precaution, or soft soap sprays can be used on a regular basis. — 2005 •(rare) The act of killing aphids.Lacewings, the beautiful, iridescent "nerve-winged" insects of the order Neuroptera, produce larvae that specialize in aphidicide, though they won't pass up ... — 1990 formsaphidicides
