Definition of protanomal in US English:

protanomal

noun

Ophthalmology
  • A person affected by protanomaly.

Origin

Early 20th century; earliest use found in John Herbert Parsons (1868–1957), ophthalmologist and physiologist. From German protanomal protanomalous from proto- + anomal anomalous, after Protanop. Compare earlier protanope and protanomalous.

Pronunciation

protanomal

/ˌprəʊtəˈnɒml/