Primary amoebic meningoencephalitis is a rare and often fatal brain infection caused by the Naegleria fowleri amoeba.

False primaries are common in this species of bird.

Direct primaries are an important part of the democratic process.

The dual primaries of the election resulted in a tie.

In some states, jungle primaries are used to determine the candidates for general elections.

The titan primaries are the main weapons of the titan.

The firehouse primaries are held every four years to select the new fire chief.

The invisible primaries are an important part of the presidential election process.

The money primaries are an important part of the election process.

The primary life support system is an essential piece of equipment for astronauts.