1. Expressing or of the nature of necessary truth; demonstrable by logical proof rather than by observation or experience.
Usage: formal; philosophical
2. Expressing absolute certainty; leaving no room for doubt.
Usage: formal

Examples

• The mathematician presented an apodeictic proof that could not be refuted.
• His apodeictic statement left no room for debate or alternative interpretation.
• In logic, apodeictic truths are those that must be true by necessity, not by chance.
• The philosopher distinguished between apodeictic knowledge and merely probable opinion.
• She spoke with apodeictic confidence about the outcome of the experiment.
• Apodeictic reasoning relies on deductive logic rather than empirical observation.