Letters that make f number
b, e, f, n, m, r, u are letters that make 'f number'
Words within f number
ER, number, MB, nu, be, numb, umber, Mb, Be, Er are words within 'f number'
b, e, f, n, m, r, u are letters that make 'f number'
ER, number, MB, nu, be, numb, umber, Mb, Be, Er are words within 'f number'
1 possible definitions for 'f number'
Under this definition, f number is a noun and has the following properties:
focal ratio, stop number, speed have the same meaning as 'f number'
'f number' can be a type of ratio.