Plural of dreikanter; multiple pebbles or rocks shaped by wind erosion into three sharp-edged forms.
Plural of 'dreikanter,' from German 'Dreikanter' (three-edged), from 'drei' (three) plus 'Kant' (edge).
The fact that scientists kept the German plural form intact shows how technical vocabulary operates differently than everyday English—we adopted the whole German morphology rather than just changing the ending to '-s', suggesting how specialized fields preserve borrowed terms exactly.
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