Definition of Photomaton in US English:

Photomaton

noun

US
  • A self-service machine that takes portrait photographs automatically, typically in a photo booth; a booth containing such a machine. Also (now rare): a photograph taken by such a machine. [A trademark in the United Kingdom.]

Origin

1920s; earliest use found in The New York Times. Blend of photo- and automaton.

Pronunciation

Photomaton

/fə(ʊ)ˈtɒmət(ə)n/