Entry 2 senses Webster, 1913

Inelastic

/ĭnˌ-əl-ăs'-tĭk/ · In·e·las·tic · IPA /ˌɪnəˈlæstɪk/

01 a. Not elastic.

1.
Not elastic.
2.
reacting little to changing price; -- of demand; as, Potatoes have an inelastic demand.(Economics)