The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
sonorous consonants. When a trilled consonant is pronounced, the occlusion first is broken to a free passage and then closed again in rhythmic succession. The air stream thus forces the active organs to vibrate, or trill—for example, the sound [r].
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.