Definitions of hypothesis on the Web:

• a proposal intended to explain certain facts or observations
• a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena; "a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in ...
• guess: a message expressing an opinion based on incomplete evidence
  wordnetweb.princeton.edu/perl/webwn

• Hypothesis is a 1978 album by the Greek artist Vangelis. In May 1971 Vangelis had played several sessions in London's Marquee Studios, joined for ...
  en.wikipedia.org/wiki/Hypothesis_(album)

• A hypothesis (from Greek ' ) consists either of a suggested explanation for an observable phenomenon or of a reasoned proposal predicting a ...
  en.wikipedia.org/wiki/Hypothesis

• A tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and ...
  en.wiktionary.org/wiki/hypothesis

• a hypothetical possibility, circumstance, statement, proposal, situation, etc.; "consider the following, just as a hypothetical"
• hypothetical - conjectural: based primarily on surmise rather than adequate evidence; "theories about the extinction of dinosaurs are still highly conjectural ...
  wordnetweb.princeton.edu/perl/webwn

• Hypothetical is the fifth studio album by British progressive metal band Threshold. The album was released on March 20, 2001 (see 2001 in music). ...
  en.wikipedia.org/wiki/Hypothetical_(album)

• a tentative statement or supposition, which may then be tested through research.
  www.thebody.com/content/treat/art6531.html

• an educated guess
  www.lternet.edu/coreareas/gloss.html

• Possible explanation that forms the basis of a research study. Studies are designed to help prove or disprove a hypothesis.
  www.bidmc.org/YourHealth/HealthResearchJournals.aspx

• A tentative explanation for a phenomenon used as a basis for further investigation.
  www.edgateway.net/pub/docs/pel/glossary.htm

• A tentative statement of a relationship between two or more variables.
  www.prm.nau.edu/prm447/definitions.htm

• A supposition or assumption advanced as a basis for reasoning or argument, or as a guide to experimental investigation.
  www.medtrans.cn/words/ShowArticle.asp