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Kotomora

下か位い互ご換かん性せい

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Meanings

1

noun

upward compatibility; forward compatibility

Technical term for compatibility with higher-tier or newer systems. Often contrasted with 上位互換性 (backward compatibility).

See also: 上位互換性 · 前方互換性

2

noun

downward compatibility; backward compatibility

Often used incorrectly to mean backward compatibility. The correct term for backward compatibility is 上位互換性. This sense is marked as incorrect usage.

See also: 上位互換性