The contribution to precision electroweak measurements due to TeV phys
ics which couples primarily to the W+/- and Z bosons may be parametriz
ed in terms of the three ''oblique correction'' parameters, S, T, and
U. We extend this parametrization to physics at much lower energies, g
reater than or similar to 100 GeV, and show that in this more general
case neutral-current experiments are sensitive to only two additional
parameters. A third new parameter enters into the W+/- width.