infra-sónico

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See also: infrasónico

Portuguese

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Adjective

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infra-sónico (feminine infra-sónica, masculine plural infra-sónicos, feminine plural infra-sónicas)

  1. (European Portuguese form) Pre-reform spelling (until 1990) of infrassónico. Still used in countries where the agreement hasn't come into effect; may occur as a sporadic misspelling.