India's GDP or gross domestic product growth stood at 6.6 per cent in the quarter ended December 31, 2018, government data showed on Thursday. That marked the slowest rate of GDP expansion recorded since the quarter ended September 2017, and lower than economists' estimate. According to a poll by news agency Reuters, the median forecast from more than 55 economists polled on February 19-25 was for a GDP growth of 6.9 per cent.