Glina is a commune in the south-east of Ilfov County, Muntenia, Romania. Its name is derived from Slavic Glina, meaning "clay". It is composed …Glina is a commune in the south-east of Ilfov County, Muntenia, Romania. Its name is derived from Slavic Glina, meaning "clay". It is composed of three villages: Cățelu, Glina, and Manolache. The commune is the site of the Glina sewage treatment plant.