n.

1. the property of being physically or mentally strong
   
   • fatigue sapped his strength
2. capability in terms of personnel and materiel that affect the capacity to fight a war;
   military capability, military strength, military posture, posture
   
   • we faced an army of great strength
   • politicians have neglected our military posture
3. physical energy or intensity;
   force, forcefulness
   
   • he hit with all the force he could muster
   • it was destroyed by the strength of the gale
   • a government has not the vitality and forcefulness of a living man
4. an asset of special worth or utility;
   forte, strong suit, long suit, metier, specialty, speciality, strong point
   
   • cooking is his forte
5. the power to induce the taking of a course of action or the embracing of a point of view by means of argument or entreaty;
   persuasiveness
   
   • the strength of his argument settled the matter
6. the amount of energy transmitted (as by acoustic or electromagnetic radiation);
   intensity, intensity level
   
   • he adjusted the intensity of the sound
   • they measured the station's signal strength
7. capacity to produce strong physiological or chemical effects;
   potency, effectiveness
   
   • the toxin's potency
   • the strength of the drinks
8. the condition of financial success
   
   • the strength of the company's stock in recent weeks
9. permanence by virtue of the power to resist stress or force;
   lastingness, durability, enduringness
   
   • they advertised the durability of their products