Meaning & Definition of Speculation in English

1. A message expressing an opinion based on incomplete evidence

2. 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"

3. An investment that is very risky but could yield great profits

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

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

• "The habit of meditation is the basis for all real knowledge"