Usage: 4 forms in 8 verses
Form Translated As     In Verse(s)
περιρρανείσ you shall sprinkle about LXX.Num.8.7
περιρρανεί he shall sprinkle about LXX.Lev.14.51
he shall sprinkle it about LXX.Lev.14.7
shall sprinkle about LXX.Num.19.19
sprinkle about LXX.Num.19.18
περιρραίνων one sprinkling about LXX.Num.19.21
περιερραντίσθη was not sprinkled about LXX.Num.19.13LXX.Num.19.20

Liddell-Scott-Jones

περιρραίνω (perirrainō) to sprinkle about G:V

περιρραίνω,

besprinkle, [Refs 4th c.BC+]; especially in sacred rites, μιᾶς ἐκ χέρνιβος βωμοὺς π. [Refs 5th c.BC+]:—middle, purify oneself, ὕδατι περίρραν᾽ (i.e. περίρραναι) [Refs 4th c.BC+]; ἐπὶ θαλάττης[Refs 4th c.BC+]

__II generally, moisten, ὕδασι.. ἀρούρας [Refs]
__II.2 pour, οἶνον.. Ὑμεναίῳ [Refs]
__II.3 metaphorically, -έρρανται στιγμαῖς [Refs 3rd c.AD+]