Usage Note
Expérimental describes methods, research, or art that is exploratory or trial-based, and is often found in scientific and artistic discourse. The feminine form is expérimentale, and the plural expérimentaux. It contrasts with éprouvé ('proven') and pairs naturally with phase, stade, or projet.
Examples
"Ce traitement est encore au stade expérimental."
Natural Translation
This treatment is still at the experimental stage.

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