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.

نصف قطر‘radius’

Arabic

References: PH Morelon: I.9:3, 29:11
Translation of:
Greek: ἡ ἐκ τοῦ κέντρου [PH Heiberg: I.8:1, 80:5; I.9:3, 82:12]
Modern translations:
French: rayon [PH Morelon: I.9:3, 28:14]
German: Halbmesser [PH Nix: I.9:3, 83:15]
Synonyms:
(مخرج) من المركز[Alm. MS Tunis: ?]
الخطّ الخارج من مركز (الدائرة) إلى الخطّ المحيط بها[PH Morelon: I.8:1, 27:3]
بعد[Plan. Sidoli+Berggren: 22(2), 33, 46, 99, 100, 274(2), 413(2), 418, 447, 450, 491]
بعد[Alm. MS Tunis: ]
نصف القطر[Plan. Sidoli+Berggren: 92, 93, 122, 123, 127, 128(2), 168, 184, 199(2), 202, 207, 208, 212, 214, 246, 248, 275, 276, 348, 370]
نصف القطر[Alm. MS Leiden: f. 6r]