What is another word for stubborn deposit?
Pronunciation: [stˈʌbən dɪpˈɒsɪt] (IPA) 
Stubborn deposit refers to the buildup or accumulation of a substance or material in a location that can be difficult to remove or dissolve. Some synonyms for stubborn deposit include persistent residue, unyielding buildup, tough sediment, obstinate accumulation, and tenacious plaque. These terms describe the same concept, emphasizing the challenging and resistant nature of the deposit. Stubborn deposits can form in a variety of contexts, from plumbing and industrial equipment to dental hygiene and personal care. Identifying and addressing stubborn deposits usually requires specialized tools, techniques, or products designed to break down or dislodge the material without causing damage or harm.
