different between prediction vs retrodiction

English

Borrowed from Latin praedictio, praedictionis; equivalent to predict +? -ion. Equivalent to Germanic forespeaking, foretale, foretelling.

prediction (plural predictions)

A statement of what will happen in the future.
"It's tough to make predictions, especially about the future." Yogi Berra or Robert Storm Petersen (in translation from Danish)
A probability estimation based on statistical methods.

(statement about the future): forecast, foretale, foretelling, halseny, prognosis, prognostication

Blend of retro- +? prediction

retrodiction (countable and uncountable, plural retrodictions)

A form of "prediction" that deals with the past rather than the future, sometimes useful in testing theories whose actual predictions are too long-term to be of immediate use.

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