diagonal
US /daɪˈæɡ.ən.əl/
UK /daɪˈæɡ.ən.əl/

1.
diagonale
a straight line joining two opposite corners of a straight-sided shape
:
•
Draw a diagonal line from one corner to the other.
Tracez une ligne diagonale d'un coin à l'autre.
•
The shortest path across the square is its diagonal.
Le chemin le plus court à travers le carré est sa diagonale.