Presumptive

affording ground for presumption

presumptive evidence.

based on presumption

a presumptive title.

regarded as such by presumption; based on inference.

Embryology . pertaining to the part of an embryo that, in the course of normal development, will predictably become a particular structure or region.

adjective

assumptive , likely , presumable , probable , prospective , conjectural , hypothetic , hypothetical , inferential , suppositional , suppositious , supposititious , suppositive