residual air
That portion of air which cannot be expelled by the most violent efforts from the lungsThat portion of air which cannot be expelled by the most violent efforts from the lungs.
Meaning
1 senses(uncountable)That portion of air which cannot be expelled by the most violent efforts from the lungs.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable