saturation
B1CEFR level
45/100Rarity: uncommon
TechnicalRegister
Medicine noun
The percentage of haemoglobin carrying oxygen in the blood, measured to assess respiratory status.
His oxygen saturation dropped to 88 per cent, so I applied supplemental oxygen and escalated.
Business noun
The point at which a market has so few remaining buyers that further growth becomes very hard.
With saturation approaching at home, the retailer had no option but to expand abroad.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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