1. (astronomy) one of three empirical laws of planetary motion stated by Johannes Kepler
   - Kepler's law

Type of: law, law of nature

• Trivandrum
• trivet
• trivia
• trivial
• trivialise
• triviality
• trivialize
• trivially
• trivium
• TRM
• tRNA
• troat
• trocar
• trochaic
• trochanter
• trochanteric
• troche
• trochee
• Trochilidae
• trochlea
• hornpout
• hornstone
• hornswoggle
• hornwort
• horny