from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems.
  • n. The composition, structure, properties, and reactions of a substance.
  • n. The elements of a complex entity and their dynamic interrelation: "Now that they had a leader, a restless chemistry possessed the group” ( John Updike).
  • n. Mutual attraction or sympathy; rapport: The chemistry was good between the partners.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.
  • n. An application of chemical theory and method to a particular substance.
  • n. The mutual attraction between two people; rapport.

from the GNU version of the Collaborative International Dictionary of English

  • n. That branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms. These atoms are not assumed to be indivisible, but merely the finest grade of subdivision hitherto attained. Chemistry deals with the changes in the composition and constitution of molecules. See atom, molecule.
  • n. An application of chemical theory and method to the consideration of some particular subject.
  • n. A treatise on chemistry.

from The Century Dictionary and Cyclopedia

  • n. The science of the composition of material things and the changes which they undergo in consequence of changes in their ultimate composition.
  • n. Same as chemiatry.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
  • n. the chemical composition and properties of a substance or object
  • n. the way two individuals relate to each other


from Wiktionary, Creative Commons Attribution/Share-Alike License

First coined 1605. From chemist, chymist, from Latin alchimista, from Arabic الكيمياء (al-kīmiya’), from article ال- (al-) + Ancient Greek χυμεία (khumeia, "art of alloying metals"), from χύμα (khuma, "fluid"), from χυμός (khumos, "juice"), from χέω (kheō, "I pour").


  • _organic chemistry_ as it is usually called, must be deferred until the student has gained some knowledge of the chemistry of other elements.

    An Elementary Study of Chemistry

  • The most used spectroscopic method in chemistry is undoubtedly NMR (nuclear magnetic resonance), and Richard R. Ernst at

    The Nobel Prize in Chemistry: The Development of Modern Chemistry

  • So the obvious way to fill gaps in chemistry is with more chemistry.


  • PS Due to some folks implying that I am a medical doctor, I want to make it crystal clear that I am a PhD and expressly not an MD (I have an earned PhD in chemistry from a Scottish University).

    3rd Presidential Debate

  • Then Second Life content that enables collaboration, especially in chemistry, is detailed.

    Archive 2008-08-01

  • After receiving a bachelor's degree in chemistry from the Radcliffe Institute for Advanced Study at Harvard, Shatz spent two years on a Marshall Scholarship at University College London learning about biology.

    Archive 2007-06-01

  • The percentage of females achieving higher degrees in chemistry is smaller than at first degree but it is increasing.

    Archive 2007-06-01

  • Changing our brain chemistry is seen as “freeing” the true self from the alien.

    You Are All Diseased

  • She explained, "The definition of entropy in chemistry is the amount of thermal energy not available to do work, but dictionaries also give the meaning 'a measure of the loss of information in a transmitted message. '"

    Word Fugitives

  • Samples is a sixth-grade physical science teacher with a degree in chemistry from the University of Georgia. - Howard has plenty of faith on and off court


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  • In the graphics arts industry, "chemistry" refers to the film and plate processing chemicals instead of the word "chemicals"

    "520,000 gallons of chemistry" "spent chemistry" ""$1400 per month in chemistry costs" "chemistry spills" - quotes from a Kodak webpage. I've seen this term used in the mid 90's in North America and Australia with various printing plate vendors (Hoechst, Agfa, Kodak, Imation)

    May 28, 2014

  • My chemistry textbook in college had a picture of a shipwreck on the cover. I had played hide and seek through the bones of that ship as a child on a family vacation, thousands of miles away. The two have since been irrevocably linked in my mind.

    February 8, 2008