line of force
Noun
Meaning
an imaginary line in a field of force; direction of the line at any point is the direction of the force at that point
Source: WordNetSynonyms
Hypernyms
Hyponyms
Examples
It had long been an ambition to find the line of force that might lead to the Holy Land in the time of Christ.
These dimensions impinge on one another. They touch. They interpenetrate. And where one dimension touches or passes through another, it forms a line of force on the landscape.
To escape from a rear arm lock, straighten the arm by choosing the best line of force. The hand turns and goes in an upward direction. Then step in and unbalance the opponent.