Envelope (disambiguation)

Look up envelope in Wiktionary, the free dictionary.

An envelope is the paper container used to hold a letter being sent by post.

Envelope may also refer to:

• Envelope (mathematics), a curve, surface, or higher-dimensional object defined as being tangent to a given family of lines or curves (or surfaces, or higher-dimensional objects, respectively)
• Envelope (category theory)

• Viral envelope, the membranal covering surrounding the capsid of a virus
• Cell envelope of a bacterium, consisting of the cell membrane, cell wall and outer membrane
• Airship § Envelope, the fabric skin covering the airship
• Building envelope, the exterior layer of a building that protects it from the elements
• Envelope (motion), a solid representing all positions that an object may occupy during its normal range of motion
• Envelope (music), the variation of a sound over time, as is used in sound synthesis
• Envelope (radar), the volume of space where a radar system is required to reliably detect an object
• Envelope (waves), a curve outlining the peak values of an oscillating waveform or signal
• Envelope detector, an electronic circuit used to measure the envelope of a waveform
• Flight envelope, the limits within which an aircraft can operate

• Envelopes (band), an indie/pop band from Sweden and France, based in the UK
• Envelope (film), a 2012 film
• "Envelopes", a song by Frank Zappa from his 1982 album Ship Arriving Too Late to Save a Drowning Witch

• Envelope (military), attacking one or both of the enemy's flanks to encircle the enemy
• The envelope of an internet email, its SMTP routing information
• Envelope system, a method of personal budgeting where money is allocated for specific purposes
• Gaza envelope, a region in southwestern Israel adjacent to the Gaza Strip

• Two envelopes problem, a paradox
• Stellar envelope (disambiguation), for astrophysics uses

This disambiguation page lists articles associated with the title Envelope.
If an internal link led you here, you may wish to change the link to point directly to the intended article.