【医】 oximeter
blood; lifeblood; related by blood
【医】 blood; haem-; haemato-; haemo-; hem-; hemat-; hemato-; hemo-; sangui-
sanguis
oxygen
【医】 o; O2; oxy-; oxygen; oxygenium; phlogisticated gas
idea; plan; calculate; count; meter; stratagem
【医】 meter