Found 2 items, similar to atria.
English → English (WordNet) Definition: atria atria See atrium atrium n 1: any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart) 2: the central area in a building; open to the sky [also: atria (pl)]
English → English (gcide) Definition: Atria Atrium \A"tri*um\, n.; pl. Atria. [L., the fore court of a Roman house.] 1. (Arch.) (a) A square hall lighted from above, into which rooms open at one or more levels. (b) An open court with a porch or gallery around three or more sides; especially at the entrance of a basilica or other church. The name was extended in the Middle Ages to the open churchyard or cemetery. [1913 Webster] 2. (Anat.) The main part of either auricle of the heart as distinct from the auricular appendix. Also, the whole articular portion of the heart. [1913 Webster] 3. (Zo["o]l.) A cavity in ascidians into which the intestine and generative ducts open, and which also receives the water from the gills. See Ascidioidea. [1913 Webster] 4. (Anat.) A cavity, entrance, or passage; as, the atrium, or atrial cavity, in the body wall of the amphioxus; an atrium of the infundibula of the lungs, etc. [Webster 1913 Suppl.] ||