1. (physics) a postulated low mass chargeless particle with small interactions; a candidate for dark matter in the universe

Derived forms: axions

Encyclopedia: Axion

• pitchblende
• pitched
• pitched battle
• pitcher
• pitcher plant
• pitcher sage
• pitcher's mound
• pitcher-plant family
• pitcher-shaped
• pitcherful
• pitchfork
• pitching
• pitching change
• pitching coach
• pitching wedge
• pitchman
• pitchstone
• pitchy
• piteous
• piteously
• piteousness
• pitfall
• pith
• pith hat
• pith helmet