In parliamentary procedure, a motion that is used to alter a previously made decision is called?

The motion referred to in this question is known as "reconsider." This motion allows members of a deliberative assembly to bring back a decision that has already been made, so it can be debated and potentially changed. The concept behind this motion is to provide a mechanism for members to reflect on previous decisions, particularly if new information has come to light or if the decision was made based on insufficient debate.

Using the motion to reconsider helps ensure that the assembly can remain flexible and responsive to the needs of its members. It acknowledges that decisions may need to be revisited for various reasons, including shifts in opinion or understanding of the topic at hand. This is a vital aspect of parliamentary procedure that supports democratic processes within an organization.

Other options do not serve the purpose of altering a previously made decision. A point of order deals with the rules of the assembly and seeks to address potential violations of those rules, while the motion to adjourn is simply to end the meeting. The term "main" refers to a primary motion being introduced for debate, not to revisiting a decision that has already been made.