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pilosebaceous unit
(anatomy) The structure consisting of hair, hair follicle, arrector pili muscle and sebaceous gland.
unit circle
(geometry) A circle of radius 1. / (trigonometry, the unit circle) The circle of radius 1 with centre at the origin, used in defining trigonometric functions.
repeat unit
(chemistry) A specific arrangement of atoms that repeats within a macromolecule / (genetics) A specific sequence of bases that repeats within a nucleic acid (or of amino acids within a protein)
unit operation
Any simple step in a multi-step chemical engineering process; examples include distillation, evaporation, mixing, filtration, crystallization etc.
base unit
A unit of measurement which is not itself defined in terms of other units, and from which other units may be derived. / The main unit of a computer or hi-fi system.
unit fine
formula unit
(inorganic chemistry) An empirical formula of an ionic compound (that does not possess individual molecules) for use in stoichiometric calculations
effects unit
An electronic device that alters how a musical instrument or other audio source sounds.
federative unit
Any of the twenty-six states or the federal district of Brazil.
parental unit
The parent or parents present in a family, considered as a unit. / (informal, often derogatory) A parent.
