PAL

Ptolemaeus Arabus et Latinus

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سطح فلك نصف النهار‘the plane of the meridian’

Arabic

References: Alm. MS Leiden: f. 16r
Translation of:
Greek: τὸ τοῦ μεσημβρινοῦ ἐπίπεδον [Alm. Heiberg: II.5, 98:16]
Synonyms:
سطح دائرة نصف النهار[Alm. MS Tunis: 21b.12]