Used in syntax, a relationship between node
s on a tree
. A node X
c-commands a node Y
if and only if the node that immediately dominate
also dominates Y
, and neither X
dominates the other. (Or, put another way, "a node c-commands its sister
s and niece
- X c-commands Y, P, and Q
- Y c-commands X
- P c-commands Q
- Q c-commands P
This relationship is extremely important to theories of government and binding.
See linguistics metanode, Principle A, Principle B, Principle C.