Salient

most noticeable or important.

The heraldic sense “leaping” and the sense “projecting outward” are borrowed from Latin salientem, the accusative form of saliēns (“springing, leaping”) (whence -ent), present participle of saliō (“leap, spring”, verb). The senses “prominent” and “pertinent” are relatively recent, and derive from the phrase salient point, which is a calque of the Latin punctum saliēns, a translation of Aristotle's term for the embryonal heart visible in (opened) eggs, which he thought seemed to move already. Compare also the German calque der springende Punkt.

pertinent, relevant