<p><strong>Adjective</strong></p><ul><li>affording ground for belief or presumption: presumptive evidence.</li><li>based on likelihood or presumption: a presumptive title; the presumptive nominee.</li><li>regarded as such by presumption; based on inference; assumed: a presumptive case of pneumonia.</li><li>pertaining to the part of an embryo that, in the course of normal development, will predictably become a particular structure or region.</li></ul>