aton·ic /(ˌ)eˈtɑnɪk, (ˌ)æ-/
 (a.)平音的,清音的,無活力的


 aton·ic /(ˈ)eˈtɑnɪk, (ˈ)æ-/ 形容詞
 弛緩的,張力缺乏的


 A·ton·ic a.
 1. Med. Characterized by atony, or lack of vital energy; as, an atonic disease.
 2. Gram. Unaccented; as, an atonic syllable.
 3. Destitute of tone vocality; surd.


 A·ton·ic, n.
 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.
 3. Med. A remedy capable of allaying organic excitement or irritation.

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 atonic
      adj 1: characterized by a lack of tonus
      2: used of syllables; "an atonic syllable carries no stress"
         [syn: unaccented] [ant: tonic]