In rec.food.cooking, "Bob (this one)" > wrote:

> Dry ounces are
> still volume measure, like fluid ounces.

Does anyone know how it happened that "ounces" refers to either weight or
volume, depending on usage? Is there some nexis between the two? All I
can imagine is that one fluid ounce of water at STP weighs one ounce. Is
that it?

--
In the councils of government, we must guard against the
acquisition of unwarranted influence, whether sought or unsought,
by the military-industrial complex. The potential for the
disastrous rise of misplaced power exists and will persist.
-- Dwight David Eisenhower