amphitheater

noun

am·​phi·​the·​ater ˈam(p)-fə-ˌthē(-ə)-tər 

also ˈam-pə-ˌthē-

1

: an oval or circular building with rising tiers of seats ranged about an open space and used in ancient Rome especially for contests and spectacles

2

a

: a very large auditorium

b

: a room with a gallery from which doctors and students may observe surgical operations

c

: a rising gallery in a modern theater

d

: a flat or gently sloping area surrounded by abrupt slopes

3

: a place of public entertainment (as for games or concerts)

amphitheatric

ˌam(p)-fə-thē-ˈa-trik 

also ˌam-pə-thē-

adjective

or amphitheatrical

ˌam(p)-fə-thē-ˈa-tri-kəl 

also ˌam-pə-thē-

amphitheatrically

ˌam(p)-fə-thē-ˈa-tri-k(ə-)lē 

also ˌam-pə-thē-

adverb

Synonyms of amphitheater

• auditorium

Examples of amphitheater in a Sentence

the conference attendees crowded into the amphitheater for the keynote address

Recent Examples on the Web

Watch an opera at the Arena, one of the world’s largest surviving ancient Roman amphitheaters. —Laura Itzkowitz, Travel + Leisure, 27 Apr. 2026

Notable shows taking place outside the amphitheater include pop star Alex Warren, who brings his Finding Family on the Road Tour on Sunday, June 21, to T-Mobile Center, and emo rock band Dance Gavin Dance, who plays Wednesday, May 13, at the VooDoo Lounge inside Harrah’s Kansas City. —Joseph Hernandez, Kansas City Star, 27 Apr. 2026

The Colosseum is the obvious first stop — an ancient amphitheater built in the 1st century CE, requested by the emperors of the Flavian dynasty. —Lauren Schuster, Miami Herald, 27 Apr. 2026

From ancient amphitheaters to Renaissance galleries, the famous landmarks in Italy offer deeply authentic cultural and religious experiences for travelers who appreciate slowing down. —Lauren Schuster, Sacbee.com, 27 Apr. 2026

Word History

Etymology

Middle English amphitheatre, borrowed from Latin amphitheātrum, borrowed from Greek amphithéātron, noun derivative from neuter of amphithéātros "(of a stadium) having seats for spectators all around," from amphi- amphi- + -theātros, derivative of théātron "place for viewing a drama, theater entry 1"

Note: The term is also used in isolated, partially naturalized Old English attestations, as anfiteatrum and anfiteatra.

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for amphitheater

• centimeter
• centimetre
• decimeter
• ergometer
• expositor
• gasometer
• gravimeter
• hexameter
• manometer
• milliliter
• millimeter
• millimetre

Kids Definition

amphitheater

noun

am·​phi·​the·​a·​ter

ˈam(p)-fə-ˌthē-ət-ər

1

: a building with seats rising in curved rows around an open space on which games and plays take place

2

: something (as a piece of level ground surrounded by hills) that resembles an amphitheater