A low continuous indistinct sound

• Often accompanied by movement of the lips without the production of articulate speech

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Mussitation \Mus`si*ta"tion\, n. [L. mussitatio suppression of the voice, fr. mussitare to be silent, to murmur.] A speaking in a low tone; mumbling. [Obs.]

Wiktionary Word definitions in Wiktionary
n. 1 speech conducted in a hushed manner, akin to a whisper or a murmur. 2 (context medicine English) A comatose patient's action of forming words with his lips without producing sound.

WordNet Word definitions in WordNet
n. a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech [syn: mutter , muttering , murmur , murmuring , murmuration ]