predive

pre- +‎ dive

predive (not comparable)

1. Before a dive.
   • 2019, Tony Perrottet, “A Deep Dive Into the Plans to Take Tourists to the ‘Titanic’”, in Smithsonian Magazine:

     “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

predive (not comparable)

1. Before a dive
   • 1981, Helen M. Paulson, Alma P. Ryan, The F-M 100-Hue Test For Assessing the Effect of Oxygen on Color Vision, U.S. Naval Submarine Medical Research Laboratory, page 3:

     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.

• deprive, prieved