rare. [f. LETHAL a. + -ITY. Cf. F. léthalité.] The condition or quality of being lethal; ability to cause death; deadliness; pl. (? nonce-use) lethal agencies.

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1656.  Blount, Glossogr., Lethality, mortality, frailty.

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1735.  J. Atkins, Voy. Guinea (1737), 104. The certain Punishment being preferable to the doubtful Lethality of the Fetish.

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1890.  Sat. Rev., 22 Nov., 595/1. Why a person surnamed ‘Deathless’ … should have succumbed to such commonplace lethalities as a horse’s hoof and Prince Ivan’s club we know not.

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