Bougie decimale is a French term that refers to decimal candle or bougie decimale in French, which is a tool used in the medical field to measure the size of the narrow passages in the body. There are several synonyms for the term bougie decimale, including calibrated dilator, bougie catheter, bougie dilator, and bougie tube. Bougies are designed to measure the internal diameter of the passages such as the esophagus or rectum during a procedure. These tools are crucial in detecting any obstructions or abnormalities in the passage, and they help physicians to determine the appropriate treatment plan. Bougie decimale tools come in different sizes to cater to different patients' needs and are safe and effective when properly used.