تلفظ بین المللی : /ˌakɹəʊmɐtˈɪsɪti/ تلفظ : [,akroUma#t'IsI2ti]
English
Achromatism.
To make sharp. Specifically: (a) To give a keen edge or fine point to; to make sharper; as, to sharpen an ax, or the teeth of a saw. (b) To render more quick or acute in perception; to make more ready or ingenious. The air . . . sharpened his visual ray To objects distant far. Milton. He that wrestles with us strengthens our nerves and sharpens our skill. Burke. (c) To make more...
