Found:
Adjunction
SYNTAX: one of the two types of movement operation, the other being substitution. Traditionally, there are two types of adjunction: Chomsky-adjunction, which results in a structure like (i), and sister-adjunction, which results in a structure like (ii). Both structures are the result of adjunction of X to Yi+1, but only in (i) the node adjoined to is doubled, or split into two segments to accommodate the adjoined element.
(i) Yi+1 (ii) Yi+1
/ \ / | \
X Yi+1 X Z Yi+1
/ \
Z Yi
Under the assumption of the binary branching constraint which rules out structures like (ii), sister-adjunction is not possible.
| LIT. | Chomsky, N. (1986b) Chomsky, N. (1986b) Kayne, R. (1984) |