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| English | Danish |
| dark crottle | skållav (Parmelia physodes) |
| dark field microscopy | mørkefeltmikroskopi |
| dark field microscopy | ultramikroskopi |
| dark heart | misfarvet kerneved |
| dark knotgrass moth | syreugle (Acronicta rumicis, Acronycta rumicis, Apatela rumicis, Apatele rumicis, Apatele rumicis oriens, Chamaepora rumicis) |
| dark leaf spot of crucifers | stor skulpesvamp (Alternaria brassicae) |
| dark red helleborine | rød hullæbe (Epipactis atrorubens (Hoffm.)Schultes (var. atrorubens)) |
| dark side of the moon | fjerne side af månen |