Letters that make functional calculus
s, a, o, f, l, n, c, t, i, u are letters that make 'functional calculus'
Words within functional calculus
cul, calculus, function, ti, UN, functional, on, fun, CT, unction, US, AL, CA, NC, Io, ion, Al, Ca, Cu, Lu, Na, Ti are words within 'functional calculus'