Atrium vs. Lobby — What's the Difference?

An open-roofed entrance hall or central court in an ancient Roman house.

A hall, foyer, or waiting room at or near the entrance to a building, such as a hotel or theater.

Each of the two upper cavities of the heart from which blood is passed to the ventricles. The right atrium receives deoxygenated blood from the veins of the body, the left atrium oxygenated blood from the pulmonary vein.

A public room next to the assembly chamber of a legislative body.

A usually skylit central area, often containing plants, in some modern buildings, especially of a public or commercial nature.

A group of persons engaged in trying to influence legislators or other public officials in favor of a specific cause

The open area in the center of an ancient Roman house.

To try to influence the thinking of legislators or other public officials for or against a specific cause

The forecourt of a building, such as an early Christian church, enclosed on three or four sides with porticoes.

To try to influence public officials on behalf of or against (proposed legislation, for example)

(Anatomy) A body cavity or chamber, especially either of the upper chambers of the heart that receives blood from the veins and forces it into a ventricle. Also called auricle.

To try to influence (an official) to take a desired action.

(architecture) A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings.

An entryway or reception area; vestibule; passageway; corridor.

(architecture) A square hall lit by daylight from above, into which rooms open at one or more levels.

That part of a hall of legislation not appropriated to the official use of the assembly.

(anatomy) A cavity, entrance, or passage.

(politics) A class or group of interested people who try to influence public officials; collectively, lobbyists.

(biology) Any enclosed body cavity or chamber.

(video games) A virtual area where players can chat and find opponents for a game.

(anatomy) An upper chamber of the heart that receives blood from the veins and forces it into a ventricle. In higher vertebrates, the right atrium receives blood from the superior vena cava and inferior vena cava, and the left atrium receives blood from the left and right pulmonary veins.

(nautical) An apartment or passageway in the fore part of an old-fashioned cabin under the quarter-deck.

(anatomy) A microscopic air sac within a pulmonary alveolus.

A confined place for cattle, formed by hedges, trees, or other fencing, near the farmyard.

(palynology) A cavity inside a porate aperture of a pollen grain formed by the separation of the sexine and nexine layers, widening toward the interior of the grain.

A margin along either side of the playing field in the sport of kabaddi.

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

(when preceded by "elevator") A waiting area in front of a bank of elevators.

The main part of either auricle of the heart as distinct from the auricular appendix. Also, the whole articular portion of the heart.

(West Midlands) lobscouse

A cavity in ascidians into which the intestine and generative ducts open, and which also receives the water from the gills. See Ascidioidea.

To attempt to influence (a public official or decision-maker) in favor of a specific opinion or cause.

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.

A passage or hall of communication, especially when large enough to serve also as a waiting room. It differs from an antechamber in that a lobby communicates between several rooms, an antechamber to one only; but this distinction is not carefully preserved.

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

That part of a hall of legislation not appropriated to the official use of the assembly; hence, the persons, collectively, who frequent such a place to transact business with the legislators;

The central area in a building; open to the sky

An apartment or passageway in the fore part of an old-fashioned cabin under the quarter-deck.

A confined place for cattle, formed by hedges. trees, or other fencing, near the farmyard.

To address or solicit members of a legislative body in the lobby or elsewhere, with the purpose to influence their votes; in an extended sense, to try to influence decision-makers in any circumstance.

To urge the adoption or passage of by soliciting members of a legislative body; as, to lobby a bill; - also used with the legislators as object; as, to lobby the state legislatuire for protection.

A large entrance or reception room or area

A group of people who try actively to influence legislation

Detain in conversation by or as if by holding on to the outer garments of; as for political or economic favors