Sigla

• (n. pl.) The signs, abbreviations, letters, or characters standing for words, shorthand, etc., in ancient manuscripts, or on coins, medals, etc.
Found on http://thinkexist.com/dictionary/meaning/sigla/

sigla

(from the article `biblical literature`) ...These tell of divergent readings in Temple scrolls of the Pentateuch, of official `book correctors` in Jerusalem, of textual emendations on the ... ...criticus), preferably at the foot of the page. These notes are usually couched in a special terminology that relies heavily on abbrev...
Found on http://www.britannica.com/eb/a-z/s/93

Sigla

Sig'la noun plural [ Latin ] The signs, abbreviations, letters, or characters standing for words, shorthand, etc., in ancient manuscripts, or on coins, medals, etc. W. Savage.
Found on http://www.encyclo.co.uk/webster/S/100

sigla

abbreviations, symbols and signs
Found on http://phrontistery.info/s.html
No exact match found