Let's summarize.
There are three main sets of rules- NFHS, NCAA, and OBR.
NFHS and NCAA rules explicity use the term "delayed dead ball". OBR does not.
In all three rulesets, some infractions trigger one of the following possibilities:
1) Immediate call of time.
2) Possible call of time depending on subsequent events
3) Delayed call of time, with penalties dependent on events subsequent to the infraction.
NFHS and NCAA use "delayed dead ball" to describe situations 2) and 3), even though only 3) is accurately described by the phrase.
So, excepting for umpires attending pro school (especially Evans'), the use of the term delayed dead ball should be fine. The phrase is codified in the the NFHS and NCAA rules, and the circumstances exist in OBR.