Definition of 下位互換 (かいごかん)

no-adjective, noun
1.
upward compatible, forward compatible, compatible with input or components intended for higher tier or later systems, versions, etc.
2.
downward compatible, backward compatible, compatible with input or components intended for lower tier or older systems, versions, etc.(incorrect usage)
See also:上位互換
Related Kanji
below, down, descend, give, low, inferior
rank, grade, throne, crown, about, some
mutually, reciprocally, together
interchange, period, change, convert, replace, renew