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Webster 1913 Edition
Atonic
1.
(Med.)
Characterized by atony, or lack of vital energy;
as, an
. atonic
disease2.
(Gram.)
Unaccented;
as, an
. atonic
syllable3.
Destitute of tone vocality; surd.
Rush.
A-ton′ic
,Noun.
1.
(Gram.)
A word that has no accent.
2.
An element of speech entirely destitute of vocality, or produced by the breath alone; a nonvocal or surd consonant; a breathing.
Rush.
3.
(Med.)
A remedy capable of allaying organic excitement or irritation.
Dunglison.
Webster 1828 Edition
Atonic
ATON'IC
,Adj.