definition of Asteriod
Astronomy Any of numerous small celestial bodies that revolve around the sun, with orbits lying chiefly between Mars and Jupiter and characteristic diameters between a few and several hundred kilometers. Also called minor planet, planetoid.
2. Zoology See starfish.
asteroid ( n1. (Celestial Objects) Also called: minor planet or planetoid any of numerous small celestial bodies that move around the sun mainly between the orbits of Mars and Jupiter replica Hermes Kelly
. Their diameters range from 930 kilometres (Ceres) to less than one kilometre
2. (Zoology) Also called: asteroidean any echinoderm of the class Asteroidea; a starfish
adj3. (Zoology) of, relating to, or belonging to the class Asteroidea
4. shaped like a star
[C19: from Greek asteroeid starlike, from ast a star]
as ( t
n. 1. any of the thousands of small, solid bodies that revolve about the sun in orbits largely between Mars and Jupiter.
asteroid (st-roid) Any of numerous small replica LV Monogram Canvas
, often irregularly shaped rocky bodies that orbit the Sun primarily in the asteroid belt, a region between the orbits of Mars and Jupiter. Asteroids are intermediate in size between planets and meteoroids; the largest asteroid in the asteroid belt is Ceres, approximately 1,000 km (620 mi) in diameter, while the lower limit is variously given in the tens or hundreds of meters. While more than 1,800 asteroids have been cataloged, and as many as a million or more smaller ones may exist, their total mass has been estimated to be less than three percent of the Moon's replica Chanel
. Asteroids are thought to be left over from the early formation of the solar system, when planetesimals in a protoplanetary disk were scattered after coming under Jupiter's gravitational influence. The continuing collision of planetesimals that remained between Jupiter and Mars caused many of them to fragment, creating the asteroids that exist today.