Science

Lava Tube Definition Lava tubes are the longest and most complicated of volcanic caves. They are the channels of rivers of lava that at some…

Oligodendrocyte Definition Oligodendrocyte is any of the neuroglial cells of the central nervous system that are responsible for the formation of myelin sheaths in the…

Volcanic Rock Definition Volcanic rock is an igneous rock of volcanic origin. It differs from other igneous rock by being of volcanic origin. Volcanic rocks…

Fermentation Definition Fermentation is a chemical reaction in which sugars are broken down into smaller molecules that can be used in living systems. Alcoholic beverages,…

Dendritic Spine Definition Dendritic spines are a preferential site of synaptic axodendritic contact; they are sparse or absent in some types of nerve cells (motor…

Proterozoic Definition Proterozoic is the later of the two divisions of the Precambrian Eon, from about 2.5 billion to 540 million years ago. The Proterozoic…

Grouping Symbols include parentheses (), curly brackets {}, or square brackets []. Grouping symbols are used to clarify which operations to do first, especially if…

Purkinje Cell Definition Purkinje cell is a large, densely branching neuron in the cerebellar cortex of the brain. These cells were first discovered in 1837…

Komatiite Definition Komatiite is relatively common in Archean greenstone belts, rare in Proterozoic belts, and virtually absent in younger regions. The type area is the…

Glycolysis Definition Glycolysis is the process in cell metabolism by which carbohydrates and sugars, especially glucose, are broken down, producing ATP and pyruvic acid. It…

Putnisite Definition The mineral, named putnisite, appears purple and translucent, and contains strontium, calcium, chromium, sulphur, carbon, oxygen and hydrogen, a very unusual combination. It…

About Cerebellum Definition Cerebellum is the part of the vertebrate brain that is located below the cerebrum at the rear of the skull and that…