There are several synonyms for the word "bacteroidal," which refers to the shape or form of certain types of bacteria. Some synonyms include rod-shaped, bacillary, and cylindrical. These terms describe the elongated and cylindrical shape of bacteria, which can be observed under a microscope. Other synonyms for "bacteroidal" include fusiform, spindle-shaped, and elongate, all of which also describe the shape of bacteria. These synonyms can be useful in scientific research, where precise and descriptive language is important for accurately communicating observations and findings. Whether using "bacteroidal" or one of its synonyms, these terms are essential for understanding the morphology and biology of different types of bacteria.