What is "alma-tadema"

Alma-Tadema is a surname. Notable people with the surname include:

• Lawrence Alma-Tadema (1836–1912), Dutch painter
• Laura Theresa Alma-Tadema (1852-1909), Lawrence's second wife and a painter in her own right
• Laurence Alma-Tadema (1865–1940), English novelist and poet and Lawrence's first daughter
• Anna Alma-Tadema (1867–1943), painter and Lawrence's second daughter