Final answer:
The term for entering with great fanfare and showiness is a 'grand entrance', characterized by noticeable, celebratory, and often elaborate actions aimed at capturing attention.
Step-by-step explanation:
The term that means to enter with great fanfare and showiness is to make a grand entrance. This refers to entering a place with the intention to be noticed, often with much celebration, elaborate dress, and sometimes even a procession.
This type of entrance is designed to capture attention and is marked by lavishness and exuberance. For example, a performer might make a grand entrance onto the stage with trumpets sounding, or a VIP might arrive at an event with an entourage, heralding their arrival. The use of decorum, ceremonial gaits, and flapping gestures are all part of the showiness associated with such entrances.