Predrop

A photograph of the test area showing the flexible bottom model in the predrop position is shown in figure 5. The models were held in the predrop position by an aircraft bomb release.

Source: wiktionary

However, in the latter half of the fifth month the dropper's prices returned to the predrop level.

Source: wiktionary

Instead, the data were interpreted in terms of the observed difference between the predrop standard gravity test and the reduced gravity test.

Source: wiktionary