atrium

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atrium /ˈeɪtrijəm/ noun
plural atria /ˈeɪtrijə/ also atriums
atrium
/ˈeɪtrijəm/
noun
plural atria /ˈeɪtrijə/ also atriums
Learner's definition of ATRIUM
[count]
: an open area inside a tall building that has windows to let light in from above
technical : one of two sections of the heart that take in blood from the veins compare ventricle