What is the killing of one’s brother called?

The killing of one’s brother is referred to as `fratricide’. The `a’ is pronounced like the `a’ in `pact’, `fact’, and `tact’; the following `i’ is like the `i’ in `sit’, `bit’, and `hit’. The final `cide’ is pronounced like the word `side’, and the stress is on the first syllable. This is one way of pronouncing the word. `Frater’ in Latin means `brother’ and `cida’ means `killer’. There are many words in English ending with the suffix `cide’. For example, the killing of one’s father is `patricide’. `Matricide’ is the killing of one’s mother, and when a parent kills his/her child, it’s called `filicide’. If you kill another human being it’s `homicide’, and when you kill yourself, it’s `suicide’.

Source: ‘Know Your English’ (The Hindu) – August 21, 2006.