Meaning of じょういごかん in Japanese

It seems that your search contains the following:

Definition of じょういごかん

じょういごかん(jouigokan) 【上位互換】

じょういごかんせい(jouigokansei) 【上位互換性】

(n, adj-no) backward compatibility; downward compatibility →Related words: 下位互換性
旧システム用に書かれたソフトとの上位互換性を保つのは大切です。
It is important to maintain backward compatibility with software that was written to run on the former system.