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Esaias 40: 22 It is he that comprehends the circle of the earth, and the inhabitants in it are as grasshoppers; he that set up the heaven as a chamber, and stretched it out as a tent to dwell in.
Septuagint: ὁ κατέχων τὸν γῦρον τῆς γῆς καὶ οἱ ἐνοικοῦντες ἐν αὐτῇ ὡς ἀκρίδες ὁ στήσας ὡς καμάραν τὸν οὐρανὸν καὶ διατείνας ὡς σκηνὴν κατοικεῖν
The word γῦρον (circle) is a variant of the word γύρος. The etymology of this word means a circle, rim, perimeter that encompasses something that is inside.
The term γύρος occurs in the Bible three times.