What does コード mean?
コード is a Japanese noun meaning “code; cord; chord” in English. It is written as コード in hiragana, and koodo in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
Ｍａｃ ＯＳ Ｘといっても、Ｍａｃ ＯＳのコードをバージョンアップした訳ではない。
Although it's "Mac OS X", that doesn't mean that the Mac OS code itself has been upgraded to a new version.