'fermium' definitions:
Definition of 'fermium'
From: WordNet
noun
A radioactive transuranic metallic element produced by bombarding plutonium with neutrons [syn: fermium, Fm, atomic number 100]
Definition of 'fermium'
From: GCIDE
- fermium \fermium\ n. the transuranic element of atomic number 100; symbol Fm. The atomic weight of the most stable isotope, having a half-life of about 80 days, is 257. The first isotope, Fm255 was discovered in 1952 in the debris of a thermonuclear explosion. Other istopes have been produced in nuclear reactors and by decay of other transuranic elements. --Handb. Ch. Phys. 61.
- Syn: Fm. [WordNet 1.5]
Definition of 'fermium'
From: Elements
- Symbol: Fm
- Atomic number: 100
- Atomic weight: (253)
- Radioactive metallic transuranic element, belongs to the actinoids. Ten known isotopes, most stable is Fm-257 with a half-life of 10 days. First identified by Albert Ghiorso and associates in the debris of the first hydrogen-bomb explosion in 1952.