salient

An adjective, often relating to a particular feature (e.g. of a building) that means prominent, striking or conspicuous.

In Geometry the meaning is specific and applies to a particularly prominent angle of a polygon, one that is less than 180°.

In a military context it refers to the projection of the forward line reaching into enemy territory.

It comes from 16 Century Latin, salire (to leap forward) which is why it is applied to those animals that leap.

I admit, I’ve never heard it used in this context, but it makes sense. Think of kangaroos.