Meaning of "ostión" in the Spanish dictionary

Crassostrea is a genus of bivalve molluscs of the Ostreidae family commonly known as oysters, closely related to oysters. They are widely used by man as a food because of its high nutritional value and due to the ease with which it is obtained and the multiple methods to achieve it, from the capture by hand, to large oyster crops. The oyster is distinguished by the presence of a shell with an irregular and asymmetrical shape, whose outer face is rough and dark, contrasting with the interior, which presents a smooth surface thanks to the calcium carbonate being transformed into an iridescent substance called nacre. Crassostrea es un género de moluscos bivalvos de la familia Ostreidae conocidos vulgarmente como ostiones, estrechamente emparentados con las ostras. Son ampliamente aprovechados por el hombre como alimento por su alto valor nutritivo y debido a la facilidad con que se obtiene y los múltiples métodos para lograrlo, desde la captura a mano, hasta grandes cultivos ostrícolas. El ostión se distingue por presentar una concha de forma irregular y asimétrica, cuya cara exterior es áspera y oscura, contrastando con la interior, que presenta una superficie lisa gracias a que el carbonato de calcio se transforma en una sustancia iridiscente llamada nácar.