take possession of for one's own use; seize
The police are allowed to appropriate anyone's car at any time if it is needed for police business.
ad (to)#proprius (one's own) (Latin)
appropriate = a + property + iate. i.e. to make it your own property, by force if required. Also when you are appropriating it yourself you are "allocating" it to yourself. A PROPERTY HE ATE appropriate: is like app (apple) rop (rob) riate (ate= taking away), if someone is taking your apple away from you i.e. taking possession of it.