Definition of alveolus noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ælˈviːələs//
, also BrE//ˌælviˈəʊləs//
; NAmE NAmE//ælˈviːələs//
(pl. alveoli
BrE BrE//ælˈviːəlaɪ//
, also BrE//ˌælviˈəʊlaɪ//
; NAmE NAmE//ælˈviːəlaɪ//
; BrE BrE//ælˈviːəliː//
, also BrE//ˌælviˈəʊliː//
; NAmE NAmE//ælˈviːəliː//
jump to other results
one of the many small spaces in each lung where gases can pass into or out of the blood Word Originlate 17th cent.: from Latin, ‘small cavity’, diminutive of alveus.
See the Oxford Advanced American Dictionary entry: alveolus