Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
διαπνεύση should refresh LXX.Song.2.17LXX.Song.4.6
διάπνευσον refresh LXX.Song.4.16

Liddell-Scott-Jones

διαπνέω (diapneō) to refresh G:V

διαπνέω-πνέω,

Epic dialect διαπνέω-πνείω, future -πνεύσομαι, blow through, of air, δ. τὸ σῶμα [Refs 4th c.BC+]:—passive, αὔραις διαπνέωπνεῖσθαι [Refs 5th c.BC+]

__2 intransitive, admit air, ἀπόφραξον ἅπαντα ὡς μὴ διαπνέωπνέειν [Refs 2nd c.BC+]
__II breathe between times, get breath, [Refs 2nd c.BC+]
__III intransitive, disperse in vapour, evaporate, [Refs 4th c.BC+]
__IV passive, διαπνέωπίπτειν καὶ διαπνέωπνεῖσθαι [Refs 5th c.BC+]
__IV.2 in Medicine texts, dissipate by exhalation, [Refs 2nd c.AD+]:—passive, [Refs 2nd c.AD+]
__IV.3 passive, of plants, exhale, διαπνέωπνεῖται καὶ ἐξατμίζεται [Refs 4th c.BC+]; of human beings, perspire, [Refs 2nd c.AD+]:—so middle, [Refs 5th c.BC+]