FISSILE

fissile

(adjective) capable of being split or cleft or divided in the direction of the grain; “fissile crystals”; “fissile wood”

fissionable, fissile

(adjective) capable of undergoing nuclear fission; “a fissionable nucleous”; “fissionable material”

Source: WordNet® 3.1


Etymology

Adjective

fissile (comparative more fissile, superlative most fissile)

Able to be split

(geology) Easily split along a grain

(physics) Capable of undergoing nuclear fission, especially by collision with a thermal neutron

Source: Wiktionary


Fis"sile, a. Etym: [L. fissilis, fr. fissus, p.p. of findere to split. See Fissure.]

Definition: Capable of being split, cleft, or divided in the direction of the grain, like wood, or along natural planes of cleavage, like crystals. This crystal is a pellucid, fissile stone. Sir I. Newton.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

2 April 2025

COVERT

(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”


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