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.

χρόνος‘time’

Greek. – Grammar: n.

References: Alm. Heiberg: I.1, 6:2; I.3, 12:2; I.5, 18:9; I.16, 85; I.16:234, 85:5. – PH Heiberg: I.3:1, 74:8
Translated into:
Arabic: زمان [Alm. MS Leiden: I.1:11, f. 2v:32; I.3:36, f. 3v:21; I.5:58, f. 4v:10; f. 14r; I.16:234, f. 14r:8. – Alm. MS Tunis: 1.1:11, f. 2r:5; I.3:36, f. 3v:9; I.5:58, f. 4r:15; I.16:234, f. 14v:26; 18a-b. – PH Morelon: I.3:1, 19:6]
Modern translations:
English: time-degree [PH Hamm: I.3:1, 46:18]
English: time [Alm. Toomer: 36]
English: period [Alm. Toomer: 39]
English: time-interval [Alm. Toomer: 42]
English: time-degree [Alm. Toomer: 74]