1. (astronomy) a plot of the absolute magnitude of stars versus their colour (or effective temperature); shows the main sequence of stars plus the white dwarfs and red giants
   - Hertzsprung-Russell diagram, color-magnitude diagram [US]

Encyclopedia: Color-magnitude diagram

• bureaucratic
• bureaucratic procedure
• bureaucratically
• bureaucratism
• bureaucratize
• buret
• burette
• burg
• burgage
• burgee
• burgeon
• burgeon forth
• burger
• burgess
• burgh
• burgher
• burglar
• burglar alarm
• burglarious
• burglarise
• burglarize
• burglarproof
• burglary
• burgle
• burgomaster