Definition of "presumptive" []

• Providing a reasonable basis for belief or acceptance. (adjective)
• Founded on probability or presumption. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As you said, there was what we called a presumptive positive test on green onions about a week ago."
• "If false, it suggests that the Democratic nominee-presumptive is audacious about more than just hope."
• "Lieberman was traveling in presumptive Republican presidential nominee John McCain's bus, the "Straight Talk Express," when it collided with a van at the intersection of 54th Street and Biscayne Boulevard."