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shape memory alloys
Science; General science
A group of metallic materials that can return to some previously defined shape or size when subjected to the appropriate thermal procedure. That is, shape memory alloys can be ...
vermiculite
Science; General science
A group of minerals common in some soils and clays and belonging to the family of minerals called layer silicates. Species within the vermiculite group are denoted as either ...
orthorhombic pyroxene
Science; General science
A group of minerals having the general chemical formula XYSi 2 O 6 , in which the Y site contains iron (Fe) or magnesium (Mg) and the X site contains Fe, Mg, manganese (Mn), or a ...
augite
Science; General science
A group of monoclinic calcic pyroxenes which have the general chemical formula (Ca,Mg,Fe)(Mg,Fe)-Si 2 O 6 , in which calcium is the dominant cation in the first cation position. ...
muscular dystrophy
Science; General science
A group of muscle diseases that are hereditary and characterized by progressive muscle weakness and wasting.
plant hormones
Science; General science
A group of naturally occurring, organic substances that influence plant physiological processes at low concentrations. The processes consist mainly of growth, differentiation, and ...
ganglion
Science; General science
A group of nerve cell bodies, usually located outside the brain and spinal cord. A ganglion located inside the central nervous system is called a nucleus.
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