He was born in Komotini, Thrace (then part of the Adrianople Vilayet of the Ottoman Empire) in 1892. On December 30, 1952, at the 4th Plenary session, he was elected leader of the KKE's Central Committee Directorate. In 1956, following the deposing of Nikolaos Zachariadis from the position as general secretary, Grozos was appointed temporary leader of the KKE. He was replaced by Konstantinos Koligiannis in 1958.
Grozos died in 1981 in Bucharest.
- Kathimerini, 5 January 1953
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