Merriam-Webster Online Dictionary
chemistry (noun)1.
a science that deals with the composition, structure, and properties of substances and with the transformations that they undergo
2.
a) the composition and properties of a substance - chemical the chemistry of iron
b) chemical processes and phenomena (as of an organism) - blood chemistry
3.
a) a strong mutual attraction, attachment, or sympathy - they have a special chemistry
b) interaction between people working together , specifically such interaction when harmonious or effective - a team lacking chemistry
