envelope

kaasusäiliö

kuori, päällys

kirjekuori

vaippa A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.
(quote-magazine)
Something that envelops; a wrapping.
A bag containing the lifting gas of a balloon or airship; fabric that encloses the gas-bags of an airship.
(quote-book)
puhekieltä A mathematical curve, surface, or higher-dimensional object that is the tangent to a given family of lines, curves, surfaces, or higher-dimensional objects.
puhekieltä A curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics.
puhekieltä The shape of a sound, which may be controlled by a synthesizer or sampler.
puhekieltä The information used for routing an email that is transmitted with the email but not part of its contents.
puhekieltä An enclosing structure or cover, such as a membrane.
puhekieltä The set of limitations within which a technological system can perform safely and effectively.
puhekieltä The nebulous covering of the head or nucleus of a comet; a coma.
An earthwork in the form of a single parapet or a small rampart, sometimes raised in the ditch and sometimes beyond it.

(rfquotek)