Definition of protanomalous in US English:

protanomalous

adjective

Ophthalmology
  • Affected by protanomaly; of, relating to, or of the nature of protanomaly. Also as noun (with the): people with protanomaly collectively (rare).

Origin

Early 20th century; earliest use found in American Journal of Psychology. From German protanomal protanomalous + -ous, after anomalous.

Pronunciation

protanomalous

/ˌprəʊtəˈnɒmələs/