What is the meaning of Chemistry?

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.

An application of chemical theory and method to a particular substance.

The chemical properties and reactions of a particular organism, environment etc.

The mutual attraction between two people; rapport.

A blood test to measure the amount of various components of the serum (such as electrolytes, creatinine, and glucose).

Source: wiktionary.org