Educated guess that attempts to explain a scientific law or certain scientific observations. Compare scientific data, scientific law, scientific methods, scientific model, scientific theory.

a kind of educated guess, an elaborate opinion, which gains credibility in proportion to the consistency with which observational and experimental evidence supports it--or at least fails to refute it

an educated guess that you simply prove or disprove

a statement of the way nature works after many observations

a testable statement about the natural world For research purposes hypotheses are usually made as testable statements about HYdrogen POwer THeoretical and Engineering Solutions

See "Hypothesis."

A scientific hypothesis is a hypothesis (a testable conjecture) which is used as a tentative explanation of an observation, but which has not yet been fully tested by the prediction validation process for a scientific theory.http://www.journaloftheoretics.com/Editorials/Vol-1/e1-3.htm What is Science? Journal of Theoretics Vol.1-3 Aug/Sept 1999 Editorial Retrieved December 31, 2006http://www.biology-online.org/dictionary/Hypothesis Biology-Online.org, Retrieved December 31, 2006 An hypothesis is used in the scientific method to predict the results of further experiments, which will be either used to confirm or disprove it. A well-tested hypothesis achieves the status of a scientific theory.http://www.journaloftheoretics.com/Editorials/Vol-1/e1-3.htm What is Science?