1. (chemistry) the theory that all indicators are either weak acids or weak bases in which the colour of the ionized form is different from the colour before dissociation
   - theory of indicators

Type of: scientific theory

• Hubble constant
• Hubble law
• Hubble parameter
• Hubble's constant
• Hubble's law
• Hubble's parameter
• hubble-bubble
• hubbly-bubbly
• hubbub
• hubby
• hubcap
• Hubel
• hubris
• hubristic
• huck
• Huck Finn
• huckaback
• huckleberry
• Huckleberry Finn
• huckleberry oak
• huckster
• HUD
• Huddie Leadbetter
• huddle
• huddle together