Found:
domain
SYNTAX: In checking theory, the domain of a head A is the set of nodes contained in Max(A) that are distinct from and do not contain A. EXAMPLE: in (i) the domain of X (a head) is the set of nodes UP, ZP, WP, YP, and H and whatever these categories dominate. XP1, XP2, X', X1 and X2 are not included in the domain of X, since each of these nodes contain X, and X is not distinct from X.
XP1
/\
/ \
UP XP2
/\
/ \
ZP1 X'
/\ /\
/ \ / \
WP ZP2 X1 YP
/\
/ \
H X2
Also see Binding domain, Governing domain,
C-command.
| LIT. | Chomsky, N. (1993) |