provisional block "provisional block" means- (a) in relation to a proposed strata plan, a block in respect of a building proposed to be, or in the course of being, erected on buliding or land, for which a separate provisional strata title is applied for; (b) in relation to an approved strata plan, such a block shown therein, for which a provisional strata title is to be registered; and (c) in relation to a book of strata register, such a block shown therein, for which a provisional strata title has been registered; [Am. Act A1290] ACT 318 - STRATA TITLES ACT 1985 4. Interpretation.