Definition of Exploratorium in English:

Exploratorium

noun

trademark
  • usually in names A scientific museum or similar centre where visitors have the opportunity to handle exhibits, perform prearranged experiments, etc.

    • ‘Visit a hall of science, museum of science, zoo, aquarium, exploratorium and planetarium.’

Origin

1960s: coined by Frank Oppenheimer (1912–85), director of the San Francisco Exploratorium, from exploration + -orium.

Pronunciation

Exploratorium

/ɪkˌsplɒrəˈtɔːrɪəm//ɛk-/