infra-sónico

See also: infrasónico

Portuguese

Adjective

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

  1. (European Portuguese spelling) pre-reform spelling (used until 1990) of infrassónico; still used where the agreement hasn’t come into effect and may occur as a sporadic misspelling
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