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Trough (geology), a long depression less steep than a trench Trough (meteorology), an elongated region of low atmospheric pressure Trough (physics), the lowest point on a wave
In medicine and pharmacology, a trough level or trough concentration (C trough) is the concentration reached by a drug immediately before the next dose is administered, [1] [2] often used in therapeutic drug monitoring.
This glossary of chemistry terms is a list of terms and definitions relevant to chemistry, including chemical laws, diagrams and formulae, laboratory tools, glassware, and equipment. Chemistry is a physical science concerned with the composition, structure, and properties of matter , as well as the changes it undergoes during chemical reactions ...
Representation of alternating troughs and ridges in upper-level westerlies for the Northern Hemisphere, with regions of convergence and divergence labeled.. A trough is an elongated region of relatively low atmospheric pressure without a closed isobaric contour that would define it as a low pressure area.
Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
In chemistry, chemical stability is the thermodynamic stability of a chemical system, in particular a chemical compound or a polymer. [1]Thermodynamic stability occurs when a system is in its lowest energy state, or in chemical equilibrium with its environment.
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Satellite image of the Cayman Trough Bathymetric features of the Rockall Trough northwest of Scotland and Ireland. In geology, a trough is a linear structural depression that extends laterally over a distance.