infra-sónico
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See also: infrasónico
Portuguese
[edit]Adjective
[edit]infra-sónico (feminine infra-sónica, masculine plural infra-sónicos, feminine plural infra-sónicas)
- (European Portuguese spelling) Pre-reform spelling (used until 1990) of infrassónico. Still used in countries where the agreement hasn't come into effect; may occur as a sporadic misspelling.