> as lemmas

1683 J. Pettus tr. L. Ercker i. iv. 15 in Fleta Minor i You must..have a Frame, in which you may beat [perh. read heat] the Proof-Tests and Crucibles.

1852 T. J. Vaiden Rational Relig. & Morals 60 All the balance is but as the proof test of its character, triumph and glory.

1995 Amer. Scientist Sept. 418/1 The Pont de Normandie [bridge] was subjected to a traditional proof-test by having four lanes occupied by 80 fully loaded trucks..so engineers could observe the bridge-deck deflection.

1896 Fort Wayne (Indiana) Gaz. 12 Apr. 5 A ticket that was drawn up, time tried and proof tested by the corporation attorneys.

1951 Sun (Baltimore) 30 Jan. 5/3 Their major purpose..is to proof-test some slide-rule work being done by nuclear physicists and weapons experts.

1995 Amer. Scientist Sept. 418/1 Before the computer, completed structures were customarily proof-tested with real loads to observe load-deflection behavior, which was checked against design calculations.