infra-sónico
Portuguese, adjective
infra-sónico is spelled I-N-F-R-A-S-Ó-N-I-C-O (11 letters). Infra-sónico is a Portuguese adjective meaning “pre-reform spelling (used until 1990) of infrassónico; still used where the agreement hasn’t come into effect and may occur as a sporadic…” (English Wiktionary, September 2026). With an accent, infra-sônico is a different word: “pre-reform spelling (used until 1990) of infrassônico; may still…”. The Portuguese Wiktionary (Wikcionário) defines it as “vide infrassónico”.
What does infra-sónico mean in English?
adjective
- 1
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
adjective
- 1
pre-reform spelling (used until 1990) of infrassônico; may still occur as a sporadic misspelling
Source: English Wiktionary, Portuguese section, dump of September 2, 2026 (CC BY-SA 4.0).
How Portuguese dictionaries define it
adjective: 1. vide infrassônico
adjective: 1. vide infrassónico
The definition in the Portuguese Wiktionary (Wikcionário), in Portuguese.
Source: Portuguese Wiktionary (Wikcionário), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of infra-sónico
- infra-sónica feminine
- infra-sónicos masculine plural
- infra-sónicas feminine plural
- infra-sônica feminine
- infra-sônicos masculine plural
- infra-sônicas feminine plural
Source: English Wiktionary and Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026).