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.

revolvi ‘circular’

Latin. – Grammar: v. inf..

References: Alm. Gerard: I.3:31, f. 2rb:19
Translation of:
Arabic: مستدير [Alm. MS Leiden: I.3:31, f. 3v:7. – Alm. MS Tunis: I.3:31, f. 2v:24]