Lexic.us

Definition of Atrium

1. Noun. Any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart).

Definition of Atrium

1. n. A square hall lighted from above, into which rooms open at one or more levels.

2. n. 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.

Definition of Atrium

1. the main room of an ancient Roman house [n ATRIA or ATRIUMS]

Medical Definition of Atrium

1. A chamber, used in anatomical nomenclature to designate a chamber affording entrance to another structure or organ. Usually used alone to designate an atrium of the heart. Origin: L., Gr. Atrion = hall (16 Dec 1997)

Lexicographical Neighbors of Atrium

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