Webster's 1828 Dictionary
REIGNING
ppr. ra'ning. 1. Holding or exercising supreme power; ruling; governing as king, queen or emperor.
2. a. Predominating; prevailing; as a reigning vice or disease.
New American Oxford Dictionary
reigning
reign ing |rāniNG reɪnɪŋ | ▶adjective occupying the throne; ruling: the official residence of the reigning monarch. • currently holding a particular title in sports: the reigning National League champions.
Oxford Dictionary
reigning
reign |ing |ˈreɪnɪŋ | ▶adjective occupying the throne; ruling: the official residence of the reigning monarch. • currently holding a particular sporting title: the reigning European champions.
American Oxford Thesaurus
reigning
reigning adjective 1 the reigning monarch: ruling, regnant; on the throne. 2 the reigning world champion: incumbent, current. 3 the reigning legal conventions: prevailing, existing, current; usual, common, recognized, established, accepted, popular, widespread.
Oxford Thesaurus
reigning
reigning adjective 1 the reigning monarch: ruling, regnant; on the throne. 2 the reigning world champion: incumbent, current, in office, presiding, in power. 3 the reigning legal conventions: prevailing, existing, extant, contemporary, present, current, modern, latest; usual, common, set, recognized, established, accepted, ordinary, popular, fashionable; general, pervasive, ubiquitous, widespread, rampant, universal; in force, in fashion, in style, in vogue.
Sanseido Wisdom Dictionary
reigning
r é ign ing 形容詞 〖名詞 の前で 〗君臨する 〈王 女王 〉; (スポーツなどで )タイトルを保持している .