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Webster 1913 Edition

Noun.

[Gr. [GREEK] slackness;

ἀ

priv. + [GREEK] tone, strength, [GREEK] to stretch: cf. F.

atonie

(Med.)

Want of tone; weakness of the system, or of any organ, especially of such as are contractile.

Noun.

[Gr. defect, of a priv. and tone, from to stretch.]

Debility; relaxation; a want of tone or tension; defect of muscular power; palsy.

atony ‎(uncountable)