Letters that make partial derivative
a, d, e, l, p, r, t, i, v are letters that make 'partial derivative'
Words within partial derivative
ER, PA, vat, ti, VA, iva, VAT, ar, at, Pa, par, RI, derivative, partial, iv, part, IV, art, AL, AR, DE, IA, pa, TIA, Al, Ar, At, Er, Ti are words within 'partial derivative'