Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
Sioux Falls
sip
SIPC
siphon
siphon bottle
siphonophore
siphonostele
siphuncle
SIPP
sippet
sipunculid
SIR
Sir
sir
sirdar
sire
siren
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

sinus node
si·nus node (plural si·nus nodes)


noun 
Definition:
 
anatomy 
Same as  sinoatrial node
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft