Dictionary

1asteroid

noun as·ter·oid \ˈas-tə-ˌrid\

: any one of thousands of small planets that circle around the sun

Full Definition of ASTEROID

1
:  any of the small rocky celestial bodies found especially between the orbits of Mars and Jupiter
2
:  starfish
as·ter·oi·dal \ˌas-tə-ˈri-dəl\ adjective
ADVERTISEMENT

Examples of ASTEROID

  1. Most asteroids are found between Mars and Jupiter.

Origin of ASTEROID

Greek asteroeidēs starlike, from aster-, astēr
First Known Use: 1802

Other Astronomy Terms

gibbous, nadir, nebulous, penumbra, retrograde, sidereal, syzygy, wane, wax, zenith

2asteroid

adjective

Definition of ASTEROID

1
:  resembling a star <asteroid bodies in sporotrichosis>
2
:  of or resembling a starfish

First Known Use of ASTEROID

1854
ASTEROID Defined for Kids

asteroid

noun as·ter·oid \ˈa-stə-ˌrid\

Definition of ASTEROID for Kids

:  one of thousands of rocky objects that move in orbits mostly between those of Mars and Jupiter and have diameters from a fraction of a mile to nearly 500 miles (800 kilometers)
Medical Dictionary

asteroid

adjective as·ter·oid \ˈas-tə-ˌrid\

Medical Definition of ASTEROID

:  resembling a star

Browse

3 ENTRIES FOUND:
Next Word in the Dictionary: asteroid beltPrevious Word in the Dictionary: AsterococcusAll Words Near: asteroid
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears