Martin-Bell syndrome is a genetic disorder that causes intellectual disability and behavioral problems.

The Siemens-Martin process is a steelmaking process that uses scrap steel as the main raw material.

St Martin's summer is a period of warm weather in November.

We enjoyed a picnic in the park during St. Martin's summer.

The northern house martins build their nests under the eaves of houses.

The northern house martin is a small bird that is known for its distinctive white rump.

The common house martin is a small bird that migrates long distances.

Siemens-Martin steel is a type of open-hearth steel.

Common house martins build their nests under the eaves of buildings.

St. Martin's summers are always hot and sunny.