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GLOSSARY
Altitude dive
A dive made atan elevation greater than 300m/1000 ft above sea level.
Ascent rate
The speed at which the diver ascends toward the surface.
ASC RATE
Abbreviation for ascent rate.
Ascent time
The minimum amount of time needed to reach the surface on a
decompression stop dive.
ASC TIME
Abbreviation for ascent time.
Ceiling
Ona decompressionstop dive,the shallowestdepth towhich adivermay
ascend based on computed nitrogen load.
CNS
Abbreviation for central nervous system toxicity.
Central nervous system toxicity
Toxicitycaused byoxygen. Cancause avariety ofneurological symptoms.
The most important of which is an epileptic-like convulsion which can
cause a diver to drown.
CNS%
Central nervous system toxicity limit fraction. Also note Oxygen Limit
Fraction
Compartment
See "Tissue group".
DAN
Abbreviation for Divers Alert Network.
DCI
Abbreviation for decompression illness.
Decompression
Time spentat a decompressionstop, or range,before surfacing, toallow
absorbed nitrogen to escape naturally from tissues
Decompression range
On a decompression stop dive, the depth range between the floor and
the ceiling within which a diver must stop for some time during ascent.
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