dwarf planetBrE /ˌdwɔːf ˈplænɪt/ 🔊NAmE /ˌdwɔːrf ˈplænɪt/ 🔊 nouna round object in space that goes around the sun but is not as large as a planet and does not clear other objects from its path 矮行星（以轨道绕着太阳的球状天体，体积不及行星，未能清除在轨迹上的其他天体）◆the dwarf planets Pluto, Ceres, Eris, Makemake and Haumea冥王星、谷神星、阋神星、鸟神星和妊神星等五颗矮行星 ➡ compare plutoid