PAL

Ptolemaeus Arabus et Latinus

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At the beginning and at the end, these placeholders are superfluous.

πτῆσις‘flight / flying’

Greek. – Grammar: n.

References: Alm. Heiberg: I.7, 25:21
Translated into:
Arabic: طيران [Alm. MS Tunis: ]
Modern translations:
English: flight / flying [Alm. Toomer: 45]