What does "synesthesia" mean?

Alternative spelling of synaesthesia.

What is a synonym for "synesthesia"?

Common synonyms include: association, hearing, identification, senses, sight, sixth sense.

noun

noun ·Rare ·Advanced level

Noun

1
Alternative spelling of synaesthesia. US, alt-of, alternative, countable, uncountable
"[…] R. H. Gault's case of synesthesia in a deaf and blind girl, who could distinguish colors by the sense of smell, […]"
2
a sensation that normally occurs in one sense modality occurs when another modality is stimulated wordnet

"[…] R. H. Gault's case of synesthesia in a deaf and blind girl, who could distinguish colors by the sense of smell, […]"

From syn- + -esthesia.