materialistic

Of or pertaining to materialism or materialists; of the nature of materialism.

But to me his very spiritualism seemed more materialistic than his physics.

2. Primarily concerned with material objects and worldly activities, as contrasted with spiritual, moral or philosophical concerns; especially, concerned primarily with gaining money and the things that money can buy.
[PJC]

adjective

Of or preoccupied with material rather than spiritual or intellectual things: material, sensual. See body/spirit.

The adjective has 2 meanings:

Meaning #1: marked by materialism
  Synonyms: mercenary, worldly-minded

Meaning #2: conforming to the standards and conventions of the middle class
  Synonyms: bourgeois, conservative