Definition of siglum in English:

siglum

noun

  • A letter or symbol which stands for a word or name, especially to denote a particular manuscript or edition of a text.

    • ‘The Wake's hybridist nature extends beyond genre, even beyond portmanteau words, indeed to the most atomic level of text (letters, punctuation, sigla of all forms).’
    • ‘The equal sign used here stands for a three-lined equal sign in the book, but my computer cannot produce such a siglum.’

Origin

Early 18th century: from late Latin sigla (plural), perhaps from singula, neuter plural of singulus single.

Pronunciation:

siglum

/ˈsɪɡləm/