from The Century Dictionary.
- Being in unison; having the same degree of gravity or acuteness.
from the GNU version of the Collaborative International Dictionary of English.
- adjective Being in unison; having the same degree of gravity or acuteness; sounded alike in pitch.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Of a single
sound; producing the same sound.
from Wiktionary, Creative Commons Attribution/Share-Alike License
And as the birds breed in communities, often very populous, and all clamour together, the effect of so many powerful and unisonant voices is very grand; but it differs in the two species, owing to the quality of their voices being different; the storm of sound produced by the black-backs is deep and solemn, while that of the herring-gulls has a ringing sharpness almost metallic.
Placing two unisonant forks near each other, sweeping the bow over one of them, and then quenching the agitated fork, the other continues to sound; this other can re-excite the former, and several transfers of sound between the two forks can be thus effected.