elasticity

Short definition from Wiktionary

Noun

1. 1
   The property by virtue of which a material deformed under load can regain its original dimensions when unloaded
2. 2
   The sensitivity of changes in a quantity with respect to changes in another quantity.
3. 3
   A measure of the flexibility of a data store's data model and clustering capabilities.
4. 4
   A system's ability to adapt to changes in workload by automatically provisioning and de-provisioning resources.
5. 5
   The ratio of the relative change in a function's output with respect to the relative change in its input, for infinitesimal changes at a certain point.
6. 6
   The quality of being elastic.
7. 7
   Adaptability.