A hypothesis is a proposed explanation for a phenomenon.

Look up hypothesis or hypothetical in Wiktionary, the free dictionary.

Hypothesis may also refer to:

• Hypothesis (album), music by Vangelis
• Hypothesis (drama), in ancient usage, a summary of the plot of a classical drama
• Hypothesis of a theorem, in mathematics
• Hypothes.is, a website annotation software
• Hypothesis Z, the first Romanian war plan for World War I

Hypothetical may also refer to:

• Geoffrey Robertson's Hypotheticals, an Australian TV panel show
• Hypothetical (album), 2001 progressive metal album
• Hypothetical (TV series), a comedy TV show

This disambiguation page lists articles associated with the title Hypothesis.
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