sigla, ōrum, n. [contr. from sigilla],
signs of abbreviation , abbreviations (late Lat.): sigla in libris ponere, Just. Ep. ad Antecess. § 8: leges per siglorum obscuritates conscribere, Cod. Just. 1, 17, 2, § 22.
·noun ·pl The signs, abbreviations, letters, or characters standing for words, shorthand, ·etc., in ...
Webster's Dictionary of the English Language