The word "historian's" is a Noun that means Belonging to or related to a historian.. In Bengali, it is expressed as "ঐতিহাসিকের, ইতিহাসবিদের, ইতিহাসবেত্তার", which carries the same essential meaning. For example: "The historian's research provided new insights into the ancient civilization.". Understanding "historian's" enhances vocabulary and improves language comprehension for both English and Bengali speakers.