The term 'arranged in rows' can be described by three crossword solutions: tiered (6 letters), ORDINATE (8 letters), and seriate (7 letters). Tiered refers to something arranged in tiers or layers, such as a tiered cake. ORDINATE is an adjective meaning arranged in order, often referring to a coordinate system. Seriate is an adjective meaning arranged in a series or sequence. All three words refer to the concept of arranging items in rows, either in a layered structure, in order, or in a sequence.