chymistry

/CH IH1 M IH0 S T R IY0/
noun
  1. 1

    (historical) Early Modern chemistry, as proto-scientific and not fully distinct from alchemy.

  2. 2

    Obsolete form of chemistry. [(uncountable) The branch of natural science that deals with the composition and constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their molecules.]