This is the 4463rd most frequent French word.
initiaux
"Initiaux" means "initials" in English.
In this sentence, 'initiaux' is an adjective describing the noun 'plans', indicating their original or first form.
Les plans initiaux pour le projet ont été modifiés.
The initial plans for the project have been modified.
Here, 'initiaux' serves as an adjective modifying 'tests', referring to the first or early experiments done.
Après les tests initiaux, le produit a été amélioré.
After the initial tests, the product was improved.
In this usage, 'initiaux' qualifies 'symptômes', pointing to the first indicators or manifestations observed.