1. A former name for the chemical element beryllium (atomic number 4).
Usage: archaic; chemistry; The term is largely obsolete; beryllium is the standard modern name.

Examples

• Glucinum was the name given to beryllium when it was first isolated in the early 19th century.
• Early chemistry textbooks referred to the element as glucinum before the name beryllium became standard.
• The discovery of glucinum contributed to the periodic table's development.