expression
as mentioned earlier; as discussed previously
A fixed phrase used to refer back to something already stated in the same text or conversation. Common in formal writing, presentations, and explanations.
前に述べたように、この問題は非常に重要です。
As mentioned earlier, this issue is very important.
前に述べたように、来月から新しい制度が始まります。
As discussed previously, the new system will start next month.
A transparent combination of 前 (before), に (particle), 述べた (past form of 述べる 'to state'), and ように (as). No special etymology beyond its literal components.