1. A science that deals with the chemical composition of and chemical changes in the solid matter of the earth or a celestial body (as the moon).
2. The related chemical and geological properties of a substance.
1. The scientific study of the chemistry of the earth, including the rocks, sediments, and soil that constitute the solid earth and the fluids that compose the ocean, inland waters, and the atmosphere.
2. Referring to chemical reactions involving earth materials; such as, soil, rocks, and water.
3. The chemistry of the composition and alterations of the solid matter of the earth or a celestial body.
The study of the chemistry of the earth includes the study of the rocks and sediments that constitute the solid earth; as well as, the fluids of the oceans, inland waters, and atmosphere.
Geochemistry is based on a foundation of other sciences, including chemistry, geology, physics, and biology. This field of research includes the study of the movement, or flux, of chemical elements through the solids and fluids of the earth.
histochemistry, histologic chemistry
1. The chemistry of body tissues; especially, in the sense of the characterization of the distribution of specific chemical compounds within cells.
2. The location of particular chemical compounds within tissues by the use of specific staining techniques; for example, phloroglucinol to stain lignin.
A member of the iatrochemical school.
iatrochemistry, iatrochemical, chemiatry
1. A school of medicine active from 1525 to 1660; it theorized that life, health, and disease were the result of chemical balances, and that disease was to be treated chemically. Its most famous members were Paracelsus, J.B. van Helmont, and de la Boë Sylvius.
2. The study of chemistry in relation to physiologic and pathologic processes, and the treatment of disease by chemical substance as practiced by a school of medical thought in the 17th century.
3. Denoting a school of medicine practicing iatrochemistry
Science is a flickering light in our darkness, it is but the only one we have and woe to him who would put it out.
Speculative, or theoretical, subatomic chemistry.
1. Medicinal chemistry in its application to the analysis, development, preparation, and the manufacture of drugs.
2. Pharmaceutical chemistry or chemistry that deals with the composition and preparation of substances used in the treatment of patients or in diagnostic studies.
3. Chemistry that deals with the composition and preparation of substances used in the treatment of patients or diagnostic studies.
Referring to the chemical properties of light; chemically reactive in the presence of light or other radiation.
1. The branch of chemistry having to do with the effect of light, or other radiant energy, while producing a chemical action, as with photographs.
2. The scientific study of chemical changes caused, or influenced, by the effects of light.
The treatment of cancer by intravenous injection of a photosensitizing agent; such as, hematoporphyrin, followed by exposure to visible light of superficial tumors or deep tumors by a fiberotic probe.
1. The chemistry of plants, plant processes, and plant products.
2. The chemistry of plants and their metabolic processes.
The use of several chemotherapeutic agents in a treatment schedule.
The application of biochemistry to psychiatry and especially to the understanding of the neurochemical patterns that may be a fundamental part of at least some psychiatric disorders.
1. Chemistry in which reactions occur under ultrasound.
2. Any chemical change; such as, in a reaction type or rate, that occurs in response to sound or ultrasound.
The study of how the properties of a compound are affected by the spatial positions of groups within its molecules. Stereochemistry is also concerned with determining the structure of stereoisomers (molecules with the same atoms and bond structure, but different three dimensional arrangements of atoms).
2. The study of the spatial distribution of atoms in a compound and its effects on the compound's properties.
A Chemical-Elements Chart History, Part 1, is available here.
See this list of chemical elements, for a greater understanding.