"scientific study of the soil," 1924, from German pedologie (1862) or French pédologie (1899), ultimately from Greek pedon "ground, earth" (from suffixed form of PIE root *ped- "foot") + -logy. Related: Pedological. Earlier it was a word for "the study of children" (1894), from pedo-.
pediculous
pedicure
pedigree
pediment
pedo-
pedology
pedometer
pedophile
pedophilia
pedophiliac
pedophilic
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