predive

adj

1. (not-comparable)Before a dive.

   ““Vessel prep” had been completed at dawn, so after a pre-dive briefing, I climbed a ladder to the top hatch of the sub, took off my boots and clambered into the tube”

adv

1. (not-comparable)Before a dive

   “Each of the divers was tested seven times--twice predive in the chamber, three times during the dive, and twice postdive, with one to several days separating the administrations.”