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trill,in music, ornamentornament,
in music, notes added to a melodic line for the purpose of embellishment or decoration, often called graces. Ornamentation was practiced as early as the Middle Ages by the singers of plainsong, and the practice seems to have reached its height in the baroque era.
..... Click the link for more information. consisting of the more or less rapid alternation of two adjacent notes. Indicated by any of several conventional symbols, it varies in speed and duration and in the manner of its beginning and ending according to context. Originating in the Renaissance, the trill became the most important of ornaments during the baroque period. In British usage the term shake is more common.
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McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Music a melodic ornament consisting of a rapid alternation between a principal note and the note a whole tone or semitone above it.
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
TRILL(TRansparent Interconnection of Lots of Links) A network layer 2 protocol that functions like a layer 3 protocol and is sometimes called "routable Ethernet." It was designed to overcome the deficiencies of the spanning tree protocol (STP), which limits traffic to one path in the network and blocks the rest.
Routing Bridges (RBridges)
TRILL uses the IS-IS link state routing protocol implemented in a routing bridge (RBridge). Operating like a bridge and router, RBridges support multiple paths and are compatible with regular bridges. See spanning tree protocol, IS-IS and bridge router.
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