1. The study of planets, planetary systems and the solar system
   - planetology

Encyclopedia: Planetary science

• lacertilian
• lacewing
• lacewing fly
• lacewood
• lacework
• Lachaise
• laches
• Lachesis
• Lachnolaimus
• Lachnolaimus maximus
• lachrymal
• lachrymal duct
• lachrymal gland
• lachrymal secretion
• lachrymation
• lachrymator
• lachrymatory
• lachrymose
• lacing
• laciniate
• lack
• lackadaisical
• lackadaisically
• lackaday
• lackey