| hypothesis definitions |
| # | Definition | Sets |
| 1 | an educated guess | 195 sets |
| 2 | theory requiring proof | 123 sets |
| 3 | educated guess | 98 sets |
| 4 | possible explanation for a set of observations or possible answer to a scientific question | 75 sets |
| 5 | a testable prediction, often implied by a theory | 72 sets |
| 6 | a tentative theory about the natural world | 61 sets |
| 7 | assumption, theory requiring proof | 54 sets |
| 8 | a proposal intended to explain certain facts or observations | 51 sets |
| 9 | a prediction that can be tested | 39 sets |
| 10 | a provisional explanation that can be tested scientifically. | 34 sets |
| 11 | a provisional explanation that can be tested scientifically | 25 sets |
| 12 | a proposed explanation for an observation | 24 sets |
| 13 | a possible explanation for a set of observations or answer to a scientific question | 24 sets |
| 14 | prediction that can be tested | 23 sets |
| 15 | a message expressing an opinion based on incomplete evidence | 23 sets |
| 16 | an assumption about behavior that is tested through scientific research | 22 sets |
| 17 | testable statement | 22 sets |
| 18 | an explanation that is based on prior scientific research or observations and that can be tested | 21 sets |
| 19 | a testable prediction, often implied by a theory. | 21 sets |
| 20 | the "if" part of a conditional statement | 20 sets |
| 21 | a proposed scientific explanation for a set of observations | 19 sets |
| 22 | theory | 18 sets |
| 23 | theory or supposition assumed as a basis for reasoning | 18 sets |
| 24 | an educated guess that attempts to explain an observation or answer a question | 16 sets |
| 25 | a possible explanation or answer to a question | 16 sets |
| 26 | possible explanation | 16 sets |
| 27 | a statement that can be tested | 14 sets |
| 28 | explanation for a question or a problem that can be formally tested | 14 sets |
| 29 | suggested, testable answer to a well-defined scientific question | 14 sets |
| 30 | a testable idea or explanation that leads to scientific investigation | 13 sets |
| 31 | an assertion subject to verification or proof as a premise from which a conclusion is drawn | 13 sets |
| 32 | a proposed answer to a question | 13 sets |
| 33 | an educated guess about the experiment in an if-then statement | 13 sets |
| 34 | a testable prediction | 13 sets |
| 35 | assumption | 12 sets |
| 36 | statement that can be tested | 12 sets |
| 37 | theory to be proved | 12 sets |
| 38 | a possible explanation for a set of observations | 12 sets |
| 39 | a testable statement | 12 sets |
| 40 | an educated guess. | 12 sets |
