| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| panspermia |
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| SYLLABICATION: | pan·sper·mi·a |
| PRONUNCIATION: |  p n-spûr m - |
| NOUN: | The theory that microorganisms or biochemical compounds from outer space are responsible for originating life on Earth and possibly in other parts of the universe where suitable atmospheric conditions exist. | | ETYMOLOGY: | Greek panspermi , mixture of all seeds : pan-, pan- + sperma, seed; see sperm1.
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| The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. |
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