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 (fĭs′əl, -īl′)
1. Possible to split.
2. Physics Fissionable, especially by neutrons of all energies.
3. Geology Easily split along close parallel planes.

[Latin fissilis, from fissus, split; see fissi-.]

fis·sil′i·ty (fĭ-sĭl′ĭ-tē) n.


1. (Nuclear Physics) Brit capable of undergoing nuclear fission as a result of the impact of slow neutrons
2. (General Physics) US and Canadian another word for fissionable
3. tending to split or capable of being split
[C17: from Latin fissilis, from fissus split; see fissi-]
fissility n


(ˈfɪs əl)

1. capable of being split or divided.
2. fissionable.
[1655–65; < Latin fissilis easily split]
fis•sil′i•ty, n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.fissile - capable of undergoing nuclear fission; "a fissionable nucleous"; "fissionable material"
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
2.fissile - capable of being split or cleft or divided in the direction of the grain; "fissile crystals"; "fissile wood"
nonfissile - not fissile


[ˈfɪsaɪl] ADJfísil


adjspaltbar; fissile materialSpaltmaterial nt
References in periodicals archive ?
A major source of concern in this regard is the growing number of fissile material stockpiles in various countries that could be used for making more nuclear weapons.
The site plans to raise the average shipping rate of low-level waste containers from one to up to eight containers after DOE approved use of the 50,000-pound casks for transporting fissile and cobalt-60 waste to an offsite disposal site.
For its part, any treaty that failed to improve security for all States was a non-starter, as evidenced by the failure of the fissile material cut-off treaty negotiations to begin.
Similarly, a treaty that only resulted in a cut-off in the future production of fissile material would jeopardize Pakistan's security and bring no added value to the cause of disarmament.
The substantive work on a Fissile Material Cut-off Treat must be undertaken in the CD on the basis of a universally accepted mandate that explicitly addresses the asymmetries in existing fissile material stocks, he said, noting Pakistan's detailed proposal in this regard remains on the table.
In spite of these efforts several kilograms of fissile material Uranium 233, enough to build three nuclear war heads, was stolen from the Los Alamos facilities of the United States and was never traced.
As PAEC had over twenty laboratories and projects under nuclear engineer Munir Ahmad Khan, it was falling behind schedule due to considerable difficulty producing fissile material.
All "special fissile material"--forms of uranium and plutonium used in nuclear fuels and some of the resulting waste--within the EU are technically owned by Euratom, the pan-European regulator of civilian nuclear activity.
Separating plutonium is one of two avenues North Korea has to produce fissile material for bombs.
The nuclear security summits raised awareness and improved security, but threat of terrorists seizing fissile material is high
The plutonium - a tiny portion of nearly 50 tonnes of fissile material that the country owns - was originally supplied by the U.
By reprocessing the fuel into mixed-oxide fuel, it can be reused at fast-breeder reactors like Monju's, which are capable of generating more fissile material than they consume.