infra-sónico

See also: infrasónico

Portuguese

Adjective

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

  1. Superseded spelling of infrassónico (superseded by the Orthographic Agreement of 1990. Still used in countries where the agreement hasn’t come into effect; may occur as a sporadic misspelling.)
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