Did you maybe mean signum?
Examples
“Thus the siglum D 1420 has to do with all cases where”
“The absence of a particular siglum after a form shall signal that form's absence from the source referred to by that siglum.”
Lists
These user-created lists contain the word ‘siglum’.
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Scribblative ✍
Scrawlings, notes, odd writings, and messages.
doodle, notation, scrawl, tracing, scribble, latrinalia, sketch, squiggle, notelet, post-it, chicken scratch, caligraphy and 88 more...
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NTDW1
template, modal, sublingual, tandem, polycentric, septuagenarian, token, irrevocable, denotive, augural, aberrant, phlebotomy and 1188 more...
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Lessons of Wordie / Wordnik
Words and concepts I learned on Wordie, or happened upon as I roamed through dictionaries and websites seeking ammunition.
usquebaugh, baugh, plunderbunny, plinthiform, hendiatris, buckjumper, peripetia, trenchmore, antifogmatic, felon, whitlow, paronychia and 152 more...
Tweets
Looking for tweets for siglum.

mollusque A sign, abbreviation, letter, or character standing for a word, words, or a literary source. (Plural, sigla) Jul 13, 2008