PAL

Ptolemaeus Arabus et Latinus

_ (the underscore) is the placeholder for exactly one character.
% (the percent sign) is the placeholder for no, one or more than one character.
%% (two percent signs) is the placeholder for no, one or more than one character, but not for blank space (so that a search ends at word boundaries).

At the beginning and at the end, these placeholders are superfluous.

δύσις ἡλίου‘sunset’

Greek

References: Alm. Heiberg: II.9, 143:21
Translated into:
Arabic: مغيب الشمس [Alm. MS Tunis: 31a.21]
Arabic: غيبوبة الشمس [Alm. MS Leiden: f. 24v.25]
Modern translations:
English: sunset [Alm. Toomer: 104]