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chemical US English

Of or relating to chemistry or the interactions of substances as studied in chemistry

chemical in chemical US English

Of or relating to chemistry or the interactions of substances as studied in chemistry

chemist US English

An expert in chemistry; a person engaged in chemical research or experiments

chemical in chemist US English

An expert in chemistry; a person engaged in chemical research or experiments

chemistry US English

The branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances

chemical in chemistry US English

The branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances

chemical cosh US English

A narcotic drug or drugs used to subdue a disruptive person, typically a patient in an institution

chemical-free US English

(Of farming or cultivation) not involving the use of artificial chemicals, especially pesticides or fertilizers

non-chemical US English

Not containing or involving the use of artificial chemicals

chemical abuse US English

Another term for substance abuse.

chemical toilet US English

A toilet that is not connected to a sewage system but has a compartment in which waste is treated with chemicals for temporary storage

chemical potential US English

The change in Gibbs free energy with respect to change in amount of the component, with pressure, temperature, and amounts of other components being constant. Components are in equilibrium if their chemical potentials are equal

chemical reaction US English

A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction

chemical dependency US English

Addiction to a mood- or mind-altering drug, such as alcohol or cocaine

chemical engineering US English

The branch of engineering concerned with the design and operation of industrial chemical plants

chemical weathering US English

The erosion or disintegration of rocks, building materials, etc., caused by chemical reactions (chiefly with water and substances dissolved in it) rather than by mechanical processes

agrochemical US English

A chemical used in agriculture, such as a pesticide or a fertilizer

chemical bond in bond US English

A strong force of attraction holding atoms together in a molecule or crystal, resulting from the sharing or transfer of electrons

fine chemicals US English

Chemical substances prepared to a very high degree of purity for use in research and industry

chemical element in element US English

Each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms

chemical formula in formula US English

A set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound

heavy chemicals US English

Bulk chemicals used in industry and agriculture

petrochemical US English

Relating to or denoting substances obtained by the refining and processing of petroleum or natural gas

physicochemical US English

Of or relating to physics and chemistry or to physical chemistry

physiochemical US English

Of or relating to physiological chemistry

chemical compound in compound1 US English

A substance formed from two or more elements chemically united in fixed proportions


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