Meaning & use
hypothesis
A proposed explanation that can be tested using observations or an investigation.
See it in a sentence
Our hypothesis was that the seedlings would grow taller with more light.
The experiment produced results that did not support the hypothesis.
A note on using this word
The plural is hypotheses. A hypothesis is testable; supporting results do not make it permanently certain.
Words with a similar meaning
proposed explanation
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
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