All 4 Uses

hypothesis
in
Hyperion
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Spedling's brief notes hypothesized that the humans were survivors of a missing seedship colony from three centuries earlier and clearly described a group suffering all of the classic retrograde cultural effects of extreme isolation, inbreeding, and overadaptation.
Part 1 *

hypothesized = proposed a seemingly reasonable, but unproven, idea based

standard suffix: The suffix "-ize" converts a word to a verb. This is the same pattern you see in words like apologize, theorize, and dramatize.
Hypothetical questions almost always had as much luck as my time-based queries.†
Part 1 *

hypothetical = of something temporarily treated as true to advance a discussion or to further investigation
If they used the same system here, then the commando leader might know that two of his (or her) troops were missing, possibly even have medcom readings on them, but might not know exactly where they were. Kassad decided that it was time to quit hypothesizing and to get moving.
Part 2

hypothesizing = proposing and considering seemingly reasonable ideas when the truth could not yet be known

standard suffix: The suffix "-ize" converts a word to a verb. This is the same pattern you see in words like apologize, theorize, and dramatize.
One hypothesis is that the Tombs relate to some future war.†
Part 5

Definitions:

(1) (hypothesis as in: a study to test her hypothesis)
a seemingly reasonable, but unproven idea or explanation based upon known facts

In casual conversation, theory is a synonym for hypothesis, but a scientist would say that a hypothesis needs to pass rigorous tests before it could be accepted as a theory.
(2) (hypothesis as in: assume as a working hypothesis)
something that may or may not be true, but is temporarily treated as true to advance a discussion or to further investigation

This sense of hypothesis is typically seen in the form, hypothetical, or hypothetically.
(3) (meaning too rare to warrant focus)