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.

λόγος‘ratio’

Greek. – Grammar: n.

References: Alm. Heiberg: I.6, 20:3, 5; I.10, 43:8. – PH Heiberg: I.8:1, 80:6
Translated into:
Arabic: نسبة [Alm. MS Tunis: . – PH Morelon: I.8:1, 27:3]
Arabic: كـ ... عند [Alm. MS Tunis: ]
Modern translations:
English: ratio [Alm. Toomer: 54]
English: ratio [Alm. Toomer: 43]
English: ratio [PH Hamm: I.8:1, 50:5]