Definition of 下位互換性 (かいごかんせい)

noun
1.
upward compatibility, forward compatibility, compatibility with input or components intended for higher tier or later systems, versions, etc.
2.
downward compatibility, backward compatibility, compatibility with input or components intended for lower tier or older systems, versions, etc.(incorrect usage)
Related Kanji
below, down, descend, give, low, inferior
rank, grade, throne, crown, about, some
mutually, reciprocally, together
interchange, period, change, convert, replace, renew
sex, gender, nature