synesthesia means joined sensation

Sharing the same root with anesthesia,meaning no sensation,
synesthesia means joined sensation.Having one type, such as colored hearing,gives you a 50% chance of having a second,
third,or fourth type.One in 90 among us experience graphemes,
the written elements of language,like letters,numerals,
and punctuation marks,as saturated with color.Some even have gender or personality.For Gail, 3 is athletic and sporty,9 is a vain, elitist girl.By contrast, the sound units of language,or phonemes,
trigger synestetic tastes.