مِيزَانٌ, “scale,” belongs to root و ز ن, associated with weighing. Its underlying pattern is represented as مِوْزَانٌ.
The prefix mīm bears kasrah, followed by quiescent wāw. Rule 3 changes that wāw to yāʾ, producing مِيزَانٌ.
Because a yāʾ replaces wāw, this must be analysed as substitution, not simple deletion. The root remains wāw-initial despite the surface form.
Opening interactive controls...
Tracing the Wāw in مِيزَانٌ
Weak-Initial Roots: Elision, Substitution, Assimilation and Short Paradigms
مِيزَانٌ, “scale,” belongs to root و ز ن, associated with weighing. Its underlying pattern is represented as مِوْزَانٌ.
The prefix mīm bears kasrah, followed by quiescent wāw. Rule 3 changes that wāw to yāʾ, producing مِيزَانٌ.
Because a yāʾ replaces wāw, this must be analysed as substitution, not simple deletion. The root remains wāw-initial despite the surface form.