1. Dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue
   - red-blindness

Derived forms: protanopias

See also: protanopic

Type of: red-green color blindness [US], red-green colour blindness [Brit, Cdn], red-green dichromacy

Encyclopedia: Protanopia

• IOL
• ion
• ion beam
• ion engine
• ion exchange
• ion pump
• ionate
• Ionesco
• Ionia
• Ionian
• Ionian order
• Ionian Sea
• ionic
• ionic beam
• ionic bond
• ionic charge
• Ionic dialect
• ionic medication
• Ionic order
• ionisation
• ionisation chamber
• ionisation tube
• ionise
• ionised
• ioniser