What does an 'application' mean in a science project? What are ... - Quora What does hypothesis mean for a science project? Hypothesis is an idea or explanation of something that is based on a few known facts but that has not yet been proved to be true or correct. Starting from your hypothesis, you work on your project, make assumptions, and lead to proving those assumptions. 2 Nonso Valentine Webmaster (2012-present) 3 y