What is the definition of the following term?

Initial

1.change of speed or direction along a vector.
2.not being offset by something else; not part of a balanced set
3.resistance to motion caused by the surface of an object
4.having to with the first
5.the tendency of matter at rest to stay at rest, and matter in motion to stay in motion, unless acted upon by an outside force

4. having to do with the first.

The term "initial" can have multiple definitions depending on the context. Here are the definitions of "initial" for each of the given contexts you provided:

1. In the context of "change of speed or direction along a vector," the term "initial" refers to the starting point or the initial state of the object before any change in speed or direction occurs.

2. In the context of "not being offset by something else; not part of a balanced set," the term "initial" means something that is not included as part of a balanced set, or something that is separate and distinct from other elements.

3. In the context of "resistance to motion caused by the surface of an object," the term "initial" is not directly related to this definition. It might be better to clarify the specific term you are referring to in this context.

4. In the context of "having to do with the first," the term "initial" simply means related to the first or beginning stage of something.

5. In the context of "the tendency of matter at rest to stay at rest, and matter in motion to stay in motion, unless acted upon by an outside force," the term "initial" is not directly related to this definition. It might be better to clarify the specific term you are referring to in this context.