fissile.

Able to undergo nuclear splitting by slow neutrons and support a chain reaction under suitable conditions.

Use it for

Words that belong together

• fissile material
• fissile isotope

On the page

The manifest listed fissile material under a separate security classification.

Usage notes

Primary category: sci-fi. Forms: Normally non-gradable; no ordinary comparative or superlative. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.