| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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Appendix I
Indo-European Roots |
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| ENTRY: | dhwer- |
| DEFINITION: | Door, doorway (usually in plural). Originally an ablauting noun *dhwor, *dhur-, in the plural, designating the entrance to the enclosure (*dhwor-o-) surrounding the house proper.
Derivatives include forest and foreign.
1. Zero-grade form *dhur- in suffixed forms *dhur- s (accusative plural) and *dhur-o- (neuter). door, from Old English duru, door (feminine, originally plural), and dor, door (neuter), respectively from Germanic *durunz and *duram. 2. Suffixed o-grade form *dhwor- ns (accusative plural). farouche, foreign, vicar forane, from Latin fors, (toward) out of doors, outside. 3. Suffixed o-grade form *dhwor-ois (locative plural). forest; afforest, faubourg, foreclose, forfeit, from Latin for s, (being) out of doors. 4. Suffixed o-grade form *dhwor-o-. forensic, forum, from Latin forum, marketplace (originally the enclosed space around a home). 5. durbar, from Old Persian duvara-, door, gate. 6. Zero-grade form *dhur-. thyroid, from Greek thur, door. (Pokorny dh  r- 278.) |
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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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