11.—For the purposes of this Act, unless the context otherwise requires:—

the expression “legitimated person” means a person legitimated by this Act;

the expression “date of legitimation” means the date of the marriage leading to the legitimation, or where the marriage occurred before the commencement of this Act, the commencement of this Act;

the expression “disposition” means an assurance of any interest in property by any instrument whether inter vivos or by will.