role call is a toku otaku term, you wont find it in a regular dictionary
Role Call is a pun with Roll Call
But Dictionary has nothing with Tokusatsu, does it means we are erroneous each time we say Toku or henshin or anything related to it?
In normal cases its Roll Call
In toku world, and anime, it's role call
It was a convention from before I was born, and we won't change it
1.The reading aloud of a list of names of people, as in a classroom or military post, to determine who is present or absent.
2. The time fixed for such a reading.
You see by point 1. that it is not what the heroes of the shows are doing when they call their name
Also remember, the japanese are very punny, even when we speak english
Again
Noun 1. role - the actions and activities assigned to or required or expected of a person or group
role - the actions and activities assigned to or required or expected of a person or group; "the function of a teacher"; "the government must do its part"; "play its role"
role, rôle [rəʊl]
n
1. (Performing Arts / Theatre) a part or character in a play, film, etc., to be played by an actor or actress
Edit: Or in this case a team of superhero who transform....
call (kôl)
v. called, call·ing, calls
v.tr.
1. To say in a loud voice; announce: called my name from across the street; calling out numbers.
Not every 2 and more words expressions are accepted
So role call if it was accepted would be
verb: To say out loud what is your position/character you play
noun:What that action would be