| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| hypersthene |
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| SYLLABICATION: | hy·per·sthene |
| PRONUNCIATION: |  h  p rs-th n |
| NOUN: | A green, brown, or black splintery, cleavable pyroxene mineral, essentially (Fe,Mg)2Si2O6. | | ETYMOLOGY: | French hypersthène : hyper-, extreme (from Greek huper-; see hyper–) + Greek sthenos, strength; see segh- in Appendix I. | | OTHER FORMS: | hyper·sthenic (-th n k) —ADJECTIVE
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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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