infra-som
Portuguese
Noun
infra-som m (plural infra-sons)
- pre-reform spelling (used until 1990) of infrassom; still used where the agreement hasn’t come into effect and may occur as a sporadic misspelling
Further reading
- “infra-som”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026