LEARNit Dictionary
infiltration
noun
/ˌɪnfɪlˈtreɪʃn/
UK
/ˌɪnfɪlˈtreɪʃn/
US
1
the act of entering a place or an organization secretly, especially in order to get information that can be used against it
نفوذ, رسوخ
2
the process of passing slowly into something
نفوذ, رسوخ, رخنه
the infiltration of rain into the soil