a. : the principal member of a theatrical or operatic company who usually plays the chief roles. b. : a highly publicized theatrical or motion-picture performer. c. : an outstandingly talented performer. a track star. d. : a person who is preeminent in a particular field.

A star is an astronomical object comprising a luminous spheroid of plasma held together by its gravity.The nearest star to Earth is the Sun.Many other stars are visible to the naked eye at night, but their immense distances from Earth make them appear as fixed points of light. The most prominent stars have been categorised into constellations and asterisms, and many of the …

2. any celestial body, except the moon, that appears as a fixed point of light in the night sky: the evening star. 3. Usu., stars. a heavenly body, esp. a planet, regarded as an astrological influence on human affairs. 4. one's fortune or success in relation to advancement or decline: Your star will rise someday.

noun. 1. as in galaxy. a ball-shaped gaseous celestial body that shines by its own light it's difficult to see the stars at night in the middle of the city because of all the streetlights.

Stars are celestial objects that can produce their own light. They are extremely hot and extremely large. They are mostly made up of hydrogen gas with a little helium in them. The sun is also a star; the sun’s energy and light play one of the key roles in sustaining all forms of life on earth.

any of a vast number of celestial objects that are visible in the clear night sky as points of light. a hot gaseous mass, such as the sun, that radiates energy, esp as light and infrared radiation, …

15/07/2014 · A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements. The Sun is the closest star to Earth.

star noun (PERFORMER) A2 [ C ] a very famous, successful, and important person, especially a performer such as a musician, actor, or sports player: a rock / movie / football star. Kids …

A star topology is a network topology in which all devices are connected to a single central hub or switch. A bus topology is a network topology in which all devices are connected by a single central connection. In star topology, if the central core fails, the whole system will get affected, and even you cannot use the Computer Network.

A star schema is a relational schema where a relational schema whose design represents a multidimensional data model. The star schema is the explicit data warehouse schema. It is known as star schema because the entity-relationship diagram of this schemas simulates a star, with points, diverge from a central table. The center of the schema consists of a large fact table, …