Oxford Dictionary English stepchild noun noun BrE BrE//ˈsteptʃaɪld// ; NAmE NAmE//ˈsteptʃaɪld// (pl. stepchildren BrE BrE//ˈsteptʃɪldrən// ; NAmE NAmE//ˈsteptʃɪldrən// ) Marriage, Relations Add to my wordlistjump to other resultsa child of your husband or wife by an earlier marriage See related entries: Marriage, Relations Word OriginOld English stēopcild (see step-, child).See stepchild in the Oxford Advanced American DictionaryCheck pronunciation: stepchild oxfordlearnersdictionaries.com