To devise or conceive a new plan, device, or design; also refers to the devised idea or plan (often used in business/technical contexts).
省エネ型の新しい照明器具を彼が考案した。
He devised a new energy-saving lighting fixture.
チームは商品の販売戦略を考案して、来月から実行する予定だ。
The team devised a sales strategy for the product and plans to implement it from next month.
そのゲームのルールは学生が考案したものだ。
The rules of that game were devised by students.