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.

محرّك ‘carrier’

Arabic. – Grammar: adj.

References: Plan. Hyp.: II.10
Modern translations:
German: Beweger [PH Nix: II.10, 122]
Synonyms:
الفلك المحرّك[PH Morelon: I.3:2, 19:8]