1.
wavy; wave-shaped; undulating
Having the form or pattern of waves; used to describe shapes, patterns, or phenomena that come in successive waves.
A compound of 波 (wave) and 状 (shape/form). Used both literally for physical wave-like shapes and figuratively for things that come in successive waves. The suffix 状 is productive and creates adjective-like nouns describing shape: 球状 (spherical), 帯状 (belt-shaped), 環状 (ring-shaped).