Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Word Explorer
Children's Dictionary
Help
Help
Help
     

a·tri·um

atrium

 
pronunciation:
eI tri m
features:
Word Explorer
part of speech: noun
inflections: atria, atriums
definition 1: a courtyard inside a building, either open to the sky or with a glass ceiling.
definition 2: either of the two upper compartments of the heart; auricle. Blood returning from the body flows into the atria, which pump the blood to the ventricles, the lower compartments of the heart.
derivation: atrial (adj.)
Word Explorer
See
  building