Strength n. 1.The quality or state of being strong; ability to do or to bear; capacity for exertion or endurance, whether physical, intellectual, or moral; force; vigor; power; as, strength of body or of the arm; strength of mind, of memory, or of judgment. "All his (Samson's) strength in his hairs were." "Thou must outlive Thy youth, thy strength, thy beauty."
2.Power to resist force; solidity or toughness; the quality of bodies by which they endure the application of force without breaking or yielding; in this sense opposed to frangibility; as, the strength of a bone, of a beam, of a wall, a rope, and the like. "The brittle strength of bones."
3.Power of resisting attacks; impregnability. "Our castle's strength will laugh a siege to scorn."
4.That quality which tends to secure results; effective power in an institution or enactment; security; validity; legal or moral force; logical conclusiveness; as, the strength of social or legal obligations; the strength of law; the strength of public opinion; strength of evidence; strength of argument.
5.One who, or that which, is regarded as embodying or affording force, strength, or firmness; that on which confidence or reliance is based; support; security. "God is our refuge and strength." "What they boded would be a mischief to us, you are providing shall be one of our principal strengths." "Certainly there is not a greater strength against temptation."
6.Force as measured; amount, numbers, or power of any body, as of an army, a navy, and the like; as, what is the strength of the enemy by land, or by sea?
7.Vigor or style; force of expression; nervous diction; said of literary work. "And praise the easy vigor of a life Where Denham's strength and Waller's sweetness join."
8.Intensity; said of light or color. "Bright Phoebus in his strength."
9.Intensity or degree of the distinguishing and essential element; spirit; virtue; excellence; said of liquors, solutions, etc.; as, the strength of wine or of acids.
10.A strong place; a stronghold. (Obs.)
On the strength of, or Upon the strength of, in reliance upon. "The allies, after a successful summer, are too apt, upon the strength of it, to neglect their preparations for the ensuing campaign."
Synonyms: Force; robustness; toughness; hardness; stoutness; brawniness; lustiness; firmness; puissance; support; spirit; validity; authority. See Force. 
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