Term What it means
Residual
nitrogen
The amount of excess nitrogen remaining in a
diver after one or more dives.
Scuba Self-contained underwater breathing apparatus.
Surface time
Elapsed time between surfacing from a dive and
beginning a descent for the subsequent dive.
Tissue group
Theoretical concept used to model bodily tissues
for the construction of decompression tables or
calculations.
Trimix
A breathing gas mix of helium, oxygen and
nitrogen.
87