jj: yo, johnny is such a hessian in math class  steven: really? i always thought he was stupid  jj: no, he's a hessian
one who is supreme in one or another subject
"jj: yo, johnny is such a hessian in math class  steven: really? i always thought he was stupid  jj: no, he's a hessian" What is the definition of "hessian"?