| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,802,159,414 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
IAU |
Also found in: Wikipedia | 0.48 sec. |
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? References in periodicals archive |
|---|
But last August, the International Astronomical Union approved the first formal definition of a planet since the Greeks coined the term some 2,000 years ago. When the International Astronomical Union declared that Pluto is no longer a planet last summer, officially downsizing the solar system from nine planets to eight, the change affected the curriculum in every school district. At a meeting of the International Astronomical Union in August 2006, scientists revised the definition of planet. |
| Acronyms and Abbreviations |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|