e/Imponderable fluid

Information
has gloss	eng: Imponderable fluids are features of several superseded scientific theories. The term has been used in natural philosophy and physics to explain certain mysterious phenomena as the result of fluids with properties which defy the imagination (or at least differ from the conventional properties of fluids). The term is used in contrast with ponderable matter.
lexicalization	eng: Imponderable fluid
instance of	e/Superseded scientific theories