palpable

capable of being perceived by the senses or the mind; especially capable of being handled or touched or felt; "a barely palpable dust"; "felt sudden anger in a palpable wave"; "the air was warm and close--palpable as cotton"

मनुष्यों तथा जंतुओं के मुंह का दृश्य, स्पर्शग्राह्य संवेदी अंग

a barely palpable dust