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.

intersection ‘intersection’

English

References: Alm. Toomer: 69; 83; 93; 94; 95
Translation of:
Greek: κοινὸν (σημεῖον) [Alm. Heiberg: II.7, 126:18,21]
Greek: τμῆμα [Alm. Heiberg: II.6, 102:11-12]
Greek: τομή [Alm. Heiberg: II.7, 121:15; II.7, 125:8; I.14, 76:23]