We don't have synonyms for pediments yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sediment, rudiments and pediment.
(n) :
(architecture) A classical architectural element consisting of a triangular section or gable found above the horizontal superstructure (entablature) which lies immediately upon the columns; fronton.
(n) :
(geology) A very gently sloping (0.5°-7°) inclined bedrock surface.
(n) :
(architecture) A classical architectural element consisting of a triangular section or gable found above the horizontal superstructure (entablature) which lies immediately upon the columns; fronton.
(n) :
(geology) A very gently sloping (0.5°-7°) inclined bedrock surface.