Usage Note
Gravitationnel is a scientific adjective used in physics and astronomy, as in onde gravitationnelle (gravitational wave) or champ gravitationnel (gravitational field). The masculine plural follows the -el → -els pattern, so gravitationnels. The related noun gravitation is the overarching force; gravité can also mean gravity but more broadly means seriousness.
Examples
"Les ondes gravitationnelles ont été détectées en 2015."
Natural Translation
Gravitational waves were detected in 2015.
Related Words
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