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What's it mean for a dollar to be "strong" or "weak"?

A strong dollar has a stable value. A weak dollar fluctuates in value like any other commodity. —Preceding unsigned comment added by 161.28.164.115 (talk) 14:01, 4 September 2009 (UTC)[reply]

No it isn't. A stable dollar is a dollar stable in value. A strong dollar is a dollar that is (or is perceived to be) expensive compared to other currencies (and taking account of PPP). If it took £100 or €110 to buy $1, the dollar would be said to be strong. If £1 or €0.90 could buy $100, the dollar would be weak. However the US government has never provided a definition of what a "strong" dollar is, it would appear to be the case that by "strong" they mean "not falling in value", but again not much information has ever been published about the strong dollar policy, at least not that I could find. Maybe someone could submit a freedom of information act request? —Preceding unsigned comment added by Ivanleo (talk • contribs) 22:54, 22 October 2009 (UTC)[reply]