Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
πρησθήσεται shall bloat LXX.Num.5.27
πρήσαι to bloat LXX.Num.5.22
πεπρησμένην to bloat LXX.Num.5.21

Liddell-Scott-Jones

πρήθω (prēthō) to bloat G:V

πρήθω,

imperfect ἔπρηθον (ἐν-): aorist ἔπρησα (see. below): —passive, perfect πέπρησμαι: aorist ἐπρήσθην (see. below): [Refs 3rd c.BC+]present participle, [Refs]: (for the signification burn, see at {πίμπρημι}; compare also ἐμπρήθω, πρηστήρ):—Epic dialect Verb (rarely if ever in Comedy texts, see below), blow out, swell out by blowing, ἔπρησεν δ᾽ ἄνεμος μέσον ἱστίον [LXX+8th c.BC+]passive, ἐπρήσθη[LXX+4th c.BC+]

__2 spout, τὸ δ᾽ [αἷμα] ἀνὰ στόμα καὶ κατὰ ῥῖνας πρῆσε he spouted blood from his mouth and nostrils, [Refs 8th c.BC+]
__3 blow into a flame, π. πυρὸς μένος, of Hephaestus, [Refs 3rd c.BC+]
__II intransitive, blow, [Refs]

LSJ Scripture Refs: LXX.Num.5.22LXX.Num.5.21