Meaning

noun an occurrence of rebounding or springing back

noun the physical property of a material that can return to its original shape or position after deformation that does not exceed its elastic limit

originEtymology tree Proto-Italic *wre- Latin re- Proto-Indo-European *sel-der. Proto-Italic *saljō Latin saliō Latin resiliō English -ency English resiliency From Latin resiliō (“to spring back”) + English -ency.

Etymology from Wiktionary, CC BY-SA 3.0