concretion n. + Add to list UK //kɒŋkɹˈɛʃən// con·cre·tion SynonymsEtymology Synonyms calculuscoalescencecoalescencycoalitioncompactioncompressionconglutinationdensificationOriginLATconcretio→FRAconcrétion→ENconcretion Borrowed from French concrétion, or Latin concretio.