approximate quantities
Webster's Dictionary (GCIDE)
Approximate \Ap*prox"i*mate\, a. [L. approximatus, p. p. of approximare to approach; ad + proximare to come near. See Proximate.]
1.Approaching; proximate; nearly resembling. [1913 Webster]
2.Near correctness; nearly exact; not perfectly accurate; as, approximate results or values. [1913 Webster]
Approximate quantities (Math.), those which are nearly, but not, equal. [1913 Webster]