PAL

Ptolemaeus Arabus et Latinus

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% (the percent sign) is the placeholder for no, one or more than one character.
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فلك معدّل النهار‘equator’

Arabic

References: PH Morelon: I.3:1, 19:4-5
Translation of:
Greek: ἰσημερινός [Alm. Heiberg: I.5, 17:18; I.8, 18:20. – PH Heiberg: I.3:1, 74:6; I.4:3, 76:9]
Modern translations:
French: orbe de l'équateur [PH Morelon: I.3:1, 18:7]
German: Sphäre des Tagesgleichers / Äquator [PH Nix: I.3:1, 75:7-8]
Synonyms:
الدائرة الاستوائية[Alm. MS Tunis: ]
دائرة معدّل النهار[Plan. Sidoli+Berggren: ?]
معدّل النهار[Plan. Sidoli+Berggren: 18, 30, 46, 133, 157, 425]
معدّل النهار[Alm. MS Tunis: . – PH Morelon: I.4:3, 21:6]