1. (chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight
   - law of definite proportions

Type of: law, law of nature

• lunar
• lunar calendar
• lunar caustic
• lunar crater
• lunar day
• lunar eclipse
• lunar excursion module
• lunar latitude
• lunar module
• lunar month
• lunar time period
• lunar year
• Lunaria
• Lunaria annua
• lunate
• lunate bone
• revenue
• revenue bond
• revenue enhancement
• revenue sharing
• revenue stamp
• revenue tariff
• revenuer
• reverb
• reverberance