Hypopselaphesia, an uncommon medical condition that affects a person's vision, is a difficult word to spell. Its phonetic transcription is /ˌhaɪ.poʊ.sɛ.ləˈfiːʒə/, where "hy" is pronounced as "hi," "sel" is pronounced as "sell," and "ph" is pronounced as "f." The word is Greek in origin and can be broken down into "hypo," meaning "under," "selaphesia," meaning "light," and "ia," meaning "condition of." Thus, hypopselaphesia translates to "under light condition," which accurately describes the visual symptoms experienced by those with the condition.
Diminished tactile sensibility, tactile hypesthesia.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.