n. (pl. s or atria) 1 a central court of an ancient Roman house. b (usu. skylit) central court rising through several storeys. 2 each of the two upper cavities of the heart. [Latin]
n. (pl. s or atria) 1 a central court of an ancient Roman house. b (usu. skylit) central court rising through several storeys. 2 each of the two upper cavities of the heart. [Latin]
