preejection adjective 1noun 1forms 1 adjective1 •Occurring prior to ejection.The severity of damage to the aircraft in combat was responsible for more preejection injuries, unconsciousness, and allowed less time to prepare for ejection. — 1975 noun1 •The time period immediately preceding ejection.We have therefore used the R-S₂ interval assuming that any prolongation that may occur is most likely a result of lengthening of R-S₁ (including preejection) rather than S₁-S₂ . — 1974 formspreejections