If you encode a message or some information, you put it into a code or express it in a different form or system of language.
例句
The two parties encode confidential data in a form that is not directly readable by the other party...雙方將機密資料加密，這樣對方就無法直接讀取資料。We compared the human mind to a computer which actively seeks information to process, encodes it and stores it for future use.我們將人腦比作一臺計算機，它主動尋找需要處理的信息，對其進行加密，并存儲起來以便將來使用。
英英詞典釋義
Noun
1. the activity of converting from plain text into code