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Good morning! I wonder what the correct abbreviation for ounces is: a) 2.7 oz b) 2.7 ozs c) 2.7 ozs.

The Chicago Manual of Style, 14th Ed., says that the singular and plural of English measures are "identical", so 1 oz. and 2.1 oz. would be the way to do it.

Franke: EFL teacher & medical editor
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My understanding, such as it is, of the UKan full-stop-after- ... correct, since Z is not the last letter of "ounce".

Yes, but it replaces the full stop. In fact, I think it was invented before the full stop became the rule. My understanding is that the z isn't really a z, but a flourish which happened to look rather zeddish in manuscript.

The RHUD and MWCD-11 say it's an abbreviation of the Italian "onza", which I suppose would make it a common-or-garden-variety Z.

Ray Heindl
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Ray Heindl filted:
Yes, but it replaces the full stop. In fact, I ... a flourish which happened to look rather zeddish in manuscript.

The RHUD and MWCD-11 say it's an abbreviation of the Italian "onza", which I suppose would make it a common-or-garden-variety Z.

But an italic Z, at the very least..r