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.

جزء‘intersection’

Arabic

References: Alm. MS Leiden: f. 17r
Translation of:
Greek: τμῆμα [Alm. Heiberg: II.6, 102:11-12]
Synonyms:
(نقطة) مستركة [Alm. MS Tunis: 28a.16,17]
تقاطع[Alm. MS Tunis: ; 27a.8]
حيث يتقاطع[Alm. MS Leiden: f. 20r.39]
حيث يشترك[Alm. MS Leiden: f. 21r.38,39]
موضع التقاطع[Alm. MS Tunis: 22b.7]