A ring

noun

The innermost circle of a nuclear explosion, within which all structures are destroyed.

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Meanings

nounA ring (plural A rings)

plural A rings

  1. governmentThe innermost circle of a nuclear explosion, within which all structures are destroyed.

Origin

The letter A designates the first (measured from ground zero); successive outer rings were designated B, C, etc.

Full word history & related roots →
Cite this entry
APA

A ring. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/A%20ring

MLA

“A ring.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/A%20ring. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “A ring,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/A%20ring.

Source: A ring on Wiktionary, CC BY-SA 4.0.