地面核爆炸 dìmiànhébàozhà surface nuclear explosion Origin Definitions Defs Strokes Stroke Words Sentences Sents 地面 dìmiàn noun ground The surface of the earth; the ground outdoors核爆炸 hébàozhà noun nuclear explosion A sudden and massive release of energy from a high-speed nuclear reaction; may result from fission, fusion, or both.