Sense

1. (relative adjective) (often as anaphor to τόσος, or πᾶς, ἅπας) as much as, how much
2. (followed by particles) (ὅσος ἄν) how ever great
3. (ὅσος δή) how great, how ever many
4. (ὁσοσοῦν) ever so small
5. (ὅσοσπερ) even so great as, no greater than
6. (adverbial usages) so far as, so much as
7. (ὅσῳ, ὅσῳ περ, often with comparative) by how much
8. (ἐν ὅσῳ) while

Examples

• πάσας τὰς ἡμέρας, ὅσας ἐὰν ᾖ ἐπ᾿ αὐτὸν ἡ ἁφή, ἀκάθαρτος ὢν ἀκάθαρτος ἔσται, κεχωρισμένος καθήσεται, ἔξω τῆς παρεμβολῆς αὐτοῦ ἔσται ἡ διατριβή. (Septuagint, Liber Leviticus 13:46)
• ὅπως ἀναφέρωσιν οἱ υἱοὶ Ἰσραὴλ τὰς θυσίας αὐτῶν, ὅσας ἂν αὐτοὶ σφάξουσιν ἐν τοῖς πεδίοις, καὶ οἴσουσι τῷ Κυρίῳ ἐπὶ τὰς θύρας τῆς σκηνῆς τοῦ μαρτυρίου πρὸς τὸν ἱερέα καὶ θύσουσι θυσίαν σωτηρίου τῷ Κυρίῳ αὐτά. (Septuagint, Liber Leviticus 17:5)
• πάσας τὰς ἡμέρας τοῦ ἁγνισμοῦ ξυρὸν οὐκ ἐπελεύσεται ἐπὶ τὴν κεφαλὴν αὐτοῦ, ἕως ἂν πληρωθῶσιν αἱ ἡμέραι, ὅσας ηὔξατο Κυρίῳ. ἅγιος ἔσται τρέφων κόμην τρίχα κεφαλῆς. (Septuagint, Liber Numeri 6:5)
• κατὰ τὸν ἀριθμὸν τῶν ἡμερῶν, ὅσας κατεσκέψασθε τὴν γῆν, τεσσαράκοντα ἡμέρας, ἡμέραν τοῦ ἐνιαυτοῦ, λήψεσθε τὰς ἁμαρτίας ὑμῶν τεσσαράκοντα ἔτη καὶ γνώσεσθε τὸν θυμὸν τῆς ὀργῆς μου. (Septuagint, Liber Numeri 14:34)
• καὶ ἐνεκάθησθε ἐν Κάδης ἡμέρας πολλάς, ὅσας ποτὲ ἡμέρας ἐνεκάθησθε. (Septuagint, Liber Deuteronomii 1:46)

Source: Ancient Greek entries from Wiktionary