下位互換性
かいごかんせい
kaigokansei
JMdict entry #1184490
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noun (common) (futsuumeishi)
upward compatibility; forward compatibility; compatibility with input or components intended for higher tier or later systems, versions, etc.
see: 上位互換性・1, 前方互換性
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noun (common) (futsuumeishi)
downward compatibility; backward compatibility; compatibility with input or components intended for lower tier or older systems, versions, etc.
see: 上位互換性・1