"feel a sense of fullness; The actor enjoyed the fullness of his success.; She lived life in all its fullness."
2.NounThe degree to which a space is full.(Can we add an example for this sense?)
3.NounThe degree to which fate has become known.
"in the fullness of time; fullness of life"
4.Noun: A measure of the degree to which a muscle has increased in size parallel to the axis of its contraction. A full muscle fills more of the space along the part of the body where it is connected.