I wanted to print out a nomenclature with symbols (i.e. VARIABLE - DEFINITION - SYMBOL form). Below is the MWE

\usepackage[acronym, toc, section, shortcuts, nopostdot, nogroupskip]{glossaries} 
\newglossary[ilg]{indices}{iyi}{iyg}{List of indices}

\newacronym{ECD}{ECD}{equivalent circuit diagram}
\newacronym{RES}{RES}{renewable energy source}
  description={Equivalent series resistance},
  sort=Rx1, type=symbols
  description={Indicates reference value},
  sort=ref, type=indices

\printglossary[type=\acronymtype, style=long, title=List of Abbreviations and Acronyms]
\printglossary[type=symbols, style=long4col, title=Nomenclature]
\printglossary[type=indices, style=long, title=List of indices]

The error is:

! Undefined control sequence.
<argument> \Ohm
l.5 ...etentrycounter[]{page}\glsnumberformat{1}}}
The control sequence at the end of the top line
of your error message was never \def'ed... BLA-BLA-BLA

It occurs only with 4cols styles one of which I need for printing out the symbols column. I also totally don't understand the error. Btw, it doen't occur with *3col styles.

  • 1
    You need to load a package that defines \Ohm. The reason the 3cols styles don't produce an error is because they don't try to use the symbol. Commented Dec 19, 2013 at 23:14
  • @NicolaTalbot OMG, thanks a lot. I'd even like to delete this question, but let it be. Actually, I tried to change the glossary style yesterday late evening, that's why so stupid mistakes. Commented Dec 20, 2013 at 14:58
  • 1
    Don't worry about it. The siunitx and gensymb packages both provide \ohm and textcomp provides \textohm if that's of any help. Commented Dec 20, 2013 at 15:10

1 Answer 1


As @NicolaTalbot mentioned above, \Ohm is not a symbol. I needed to use symbol={\ensuremath{\Omega}} instead. Excuses, I was simply too tired yesterday evening for noticing that. But still may be somebody will do the same stupid mistake, so I keep the question (and close it).

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