| a. | 1. | (Med.) Characterized by atony, or lack of vital energy; |
| 2. | (Gram.) Unaccented; | |
| 3. | Destitute of tone vocality; surd. | |
| 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. |
| Adj. | 1. | atonic - characterized by a lack of tonus |
| 2. | atonic - used of syllables; "an atonic syllable carries no stress" Synonyms: unaccented |