Definitions from Wiktionary (RoC)

▸ noun:  An enormous mythical bird in Eastern legend.
▸ noun:  (medicine, colloquial) Rocuronium.
▸ noun:  (UK, military) The Royal Observer Corps, a United Kingdom defence organisation (1925 to 1992).
▸ noun:  (Canada, politics) The "Rest of Canada", i.e. Canada excluding the province of Quebec.
▸ noun:  Initialism of Republic of China. (all senses) [A country in East Asia; modern-day Taiwan, the rump state left over from the Republic of China on the mainland after 1949.]
▸ noun:  Abbreviation of Republic of (the) Congo.
▸ noun:  (sports) Abbreviation of Russia(n) Olympic Committee.
▸ noun:  (motor racing) Abbreviation of Race of Champions.
▸ noun:  (Russia) Abbreviation of Russian Orthodox Church. [One of the autocephalous Eastern Orthodox Christian churches.]
▸ noun:  (mathematics, of a series) Initialism of region of convergence.
▸ noun:  (statistics, radio) Initialism of receiver operating characteristic.
▸ noun:  Alternative form of ROC (R of C) [(UK, military) The Royal Observer Corps, a United Kingdom defence organisation (1925 to 1992).]

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