1.Definition: a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)

"Speculations about the outcome of the election", "He dismissed it as mere conjecture"

Related Noun(s):conjecture

Category: General

2.Definition: a message expressing an opinion based on incomplete evidence

Related Noun(s):conjecture, guess, hypothesis, supposition, surmisal, surmise

Category: General

3.Definition: an investment that is very risky but could yield great profits

"He knew the stock was a speculation when he bought it"

Related Noun(s):venture

Category: General

4.Definition: continuous and profound contemplation or musing on a subject or series of subjects of a deep or abstruse nature

Related Noun(s):meditation

Category: General