Calder, Alexander Syllabification: (Cal·der, Alexander)Pronunciation: /ˈkôldər/Definition of Calder, Alexander (1898–1976), US sculptor and painter. He was one of the first artists to introduce movement into sculpture, making mobiles incorporating abstract forms. His static sculptures are known as stabiles. Calder, Alexander in other Oxford dictionaries Definition of Calder, Alexander in the British & World English dictionary