noun
- Plural of masurium, a former name for the chemical element technetium (atomic number 43), now obsolete.
Usage: archaic; chemistry; The term is no longer used in modern scientific nomenclature; technetium is the accepted name.
Examples
- Early 20th-century chemists proposed the name masuriums for element 43 before it was officially named technetium.
- The discovery of masuriums was claimed but later disputed by the scientific community.
- Modern periodic tables do not list masuriums; the element is known exclusively as technetium.