A '''scientific theory''' is more substantial than a conjecture or hypothesis, but may not be verified as consistent with empirical data. <ref>For example, scientists may refer to phlogiston theory or ether theory, even though empirical verification was lacking.</ref>
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A '''scientific theory''' is more substantial than a conjecture or [[hypothesis]], but may not be verified as consistent with empirical data. <ref>For example, scientists may refer to phlogiston theory or ether theory, even though empirical verification was lacking.</ref>
It is a plausible and consistent explanation for observable phenomena.
It is a plausible and consistent explanation for observable phenomena.