gasometers

/G AE1 S AH0 M IY0 T ER0 Z/
noun
  1. 1

    An apparatus used to store or measure gas or the flow of gas, particularly in a laboratory setting.

  2. 2

    A large tank or reservoir for storing gas; a gasholder.

Source: https://en.wiktionary.org/wiki/gasometer, https://en.wiktionary.org/wiki/gasometers