PAL

Ptolemaeus Arabus et Latinus

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% (the percent sign) is the placeholder for no, one or more than one character.
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At the beginning and at the end, these placeholders are superfluous.

على ظنّون ‘in retardations’

Arabic

References: Alm. MS Leiden: f. 5v
Translation of:
Greek: καθ’ ὑπολείψεις [Alm. Heiberg: I.8, 28:3]
Synonyms:
بالظنّ[Alm. MS Tunis: ]