the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
"The chemistry professor explained how heating certain compounds could trigger a rapid reaction that released energy."
the way two individuals relate to each other
"their chemistry was wrong from the beginning -- they hated each other"
"a mysterious alchemy brought them together"
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.
"The professor explained that our lab project focused on chemistry, specifically studying how altering molecular structures triggers chemical reactions to create new materials."
In plain English: Chemistry is the study of what things are made of and how they change when mixed together.
"The two partners had amazing chemistry from the very first date."
Usage: While chemistry is formally the scientific study of matter and its interactions, it also describes the intangible connection or rapport between people. Use this word to indicate when individuals feel an immediate sense of understanding or attraction toward one another.
The word "chemistry" was first coined in 1605 by adding the suffix "-ry" to "chemist," which itself comes from the Arabic term al-kīmiyāʔ. This Arabic phrase originally referred to the Greek art of alloying metals, a practice rooted in the concept of pouring or mixing fluids.