Envelope

κέλυφος

kélyfos

(engineering: limits within which a technological system can perform safely and effectively)

περίβλημα

perívlima

(something that envelops)

περίβλημα

perívlima

(biology: enclosing structure or cover)

περιβάλλουσα

perivállousa

(geometry: object that is the tangent to a family of objects)

περιχιτώνιο

perichitónio

(biology: enclosing structure or cover)

φάκελος

fákelos

(wrapper for mailing)