point spread
noun
1
- N. Amer. a forecast of the number of points constituting the margin by which a stronger team is expected to defeat a weaker one, used for betting purposes〈北美〉（强队战胜弱队的）预计分数差（用于赌博）。
2
- Physics & Physiology the spread of energy from a point source, especially with respect to light coming into an optical instrument or eye【物理, 生理】点源能量传播。