Science

Neurotransmitter Definition Neurotransmitter is a chemical substance that is produced and secreted by a neuron and then diffuses across a synapse to cause excitation or…

Rhenium Definition Rhenium is a very rare, dense, silvery-white metallic element with a very high melting point. It is used to make catalysts and electrical…

Stromatolite Definition Stromatolite is a dome-shaped structure consisting of alternating layers of carbonate or silicate sediment and fossilized algal mats. Stromatolites are one of the…

How to Solve a Linear Inequation Algebraically? A linear inequation is a linear expression that contains relational symbols. That means that instead of =, you’ll…

Histamine Definition Histamine is an organic compound found widely in animals and plants that in humans and other mammals is released as part of the…

Rounding Decimals Rounding means making a number simpler but keeping its value close to what it was. The result is less accurate, but easier to…

Porphyry Definition Porphyry is an igneous rock containing the large crystals known as phenocrysts embedded in a fine-grained matrix. The larger crystals are called phenocrysts.…

St Martin’s Island St Martin’s Island is a small island in the northeast of the bay of bengal, about 9 km south of the Cox’s…

Gastric Glands Definition Gastric gland is the basic secretory unit of the stomach and contains a variety of component cells located in characteristic locations. It…

Diorite Definition Diorite is a gray, coarse-grained plutonic rock. Diorite consists mainly of sodium-rich plagioclase and one or more mafic minerals such as biotite, hornblende,…

Brucite Definition Brucite is the mineral form of magnesium hydroxide, which is occurring in tabular, foliated crystals: used in magnesia refractories. Its chemical formula Mg(OH)2.…

Differences between equation and inequation Equations and inequation are both mathematical sentences formed by relating two expressions to each other. We have seen that equations…