Correct. The Unicode standard does not encode, for example, an "s" meaning "second" as opposed to a general "s". This is the case for all units, see:
http://physics.nist.gov/cuu/Units/units.html
There were a few items that were encoded for round-trip compatibility with existing standards that had separate codepoints assigned to units, both in the Letterlike symbols and up in U+3380.. Their use is discouraged.
Mark
Andreas Prilop wrote:
> The block Letterlike Symbols contains a few symbols for physical units:
>
> U+2103 degree Celsius
> U+2109 degree Fahrenheit
> U+2113 litre
> U+2126 ohm
> U+212A kelvin
> U+212B ångström
>
> Section 12.2 of the Unicode standard, version 3.0, says:
> In general, the usage of distinct codes for letterlike symbol
> [...] is strongly discouraged.
>
> Does this mean that U+03A9 is preferred for ohm
> and that U+00C5 is preferred for ångström?
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