(ˈpleɪnəˌsɒl) n (Physical Geography) a type of intrazonal soil of humid or subhumid uplands having a strongly leached upper layer overlying a clay hardpan[C20: from Latin plano- + solum soil]
Planosol
Planosol
[′plan·ə‚sȯl] (geology) An intrazonal, hydromorphic soil having a clay pan or hardpan covered with a leached surface layer; developed in a humid to subhumid climate.