chemo-, chem-, chemico-, chemi-, -chemist, -chemic, -chemical +

One who specializes in the treatment of ailments with chemical substances.

1. The treatment of disease, especially of parasitic infections or cancer, by means of chemical substances which act selectively on micro-organisms or malignant tissue.
2. Treatment of disease by means of chemical substances or drugs; usually used in reference to neoplastic disease (a new and abnormal formation of tissue; such as, a tumor or other growth). Also known as, pharmacotherapy.
3. The treatment of a disease with chemicals or drugs; used especially in reference to the treatment of cancer with chemicals.

Any organism that creates its principal energy source by oxidizing organic or inorganic compounds.

Relating to or exhibiting chemotropism; tending to move toward or away from a chemical stimulus.

The bending or movement of an organism, or part of an organism, in response to an outer chemical stimulus.

1. The tendency of an organism or part of an organism to bend toward or away from a chemical stimulus.
2. An orientation response to a chemical stimulus.

In biology, a reference to plants which protect themselves from herbivorous animals by the production of noxious chemical substances: Chemozoophobous vegetation prevents its consumption by producing a poisonous taste if eaten.

An area of chemistry that is involved with the use of raw, organic, and previously unused agricultural substances to produce new, nonfood products such as varnishes and paints.

1. The study of the chemical properties of the heavenly bodies and of the formation and distribution of elements and compounds in them and in the universe as a whole.
2. The branch of science which involves the reactions involving changes in atoms or molecules in the composition of the universe and its origin.

1. The branch of science and technology that deals with the transformations between chemical reactions and electrical energy.
2. A branch of chemistry that studies chemical changes associated with electrons and electricity.
3. The scientific study of chemical changes that occur when a chemical reaction produces an electric current, or a reverse action takes place.
4. The study of the electric effects which accompany chemical actions and the chemical activities produced by electric influences.
5. The science of chemical changes produced by electricity and of the interconversion of electrical and chemical energy.

1. A reference to the study of the chemical composition of the various phases of the earth and the physical and chemical processes which have produced the observed distribution of the elements and nuclides in these phases.
2. Descriptive of the scientific study of the chemistry of the earth, including the rocks, sediments, and soil that constitute the solid earth and the fluids which compose the ocean, inland waters, and the atmosphere.

An unusually high concentration of one or more chemical elements in a sample of rock, soil, vegetation, water, or a high concentration of hydrocarbons in soil, which often indicates a nearby mineral deposit.

1. The study of the global distribution and the migration of a particular element, mineral, or compound, including the amount liberated by weathering and transported to earth sediments and oceans.
2. The proportional distribution, and the migration rate, in the global fractionation of elements, minerals, or compounds; for example, the distribution of quartz in igneous rocks, its liberation by weathering, and its redistribution into sediments and, in solution, into lakes, rivers, and oceans.

Sediments refer to solid fragments of inorganic or organic material that come from the weathering (disintegration and decomposition) of rock and are carried and deposited by wind, water, or ice.

The successive stages in the circulation and migration of chemical elements among the lithosphere, hydrosphere, and atmosphere during geological changes.

1. Over geological time, any change in the chemical composition of some section of the earth; such as, the oceans.
2. Any alteration or change in the chemical composition of a rock in which the amount of a particular component exceeds the amount present in the parent rock.