"Anianthinopsy" is a rare and complex word that exudes difficulty in its spelling. It's pronounced /a.ni.æn.θɪ.noʊpsi/ (ah-nee-AN-thin-op-see), and its spelling reflects its origin from ancient Greek language. The prefix "an" denotes negation or absence, while "ia" refers to a condition or state. "Anthi" relates to flowers, and "opsy" means sight. Overall, the word seems to mean "unable to see colors" or "color blindness". In short, "anianthinopsy" is a prime example of how even the most complicated words can be deciphered through phonetic transcription.
Violet-blindness, inability to recognize violet or purple.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.