envelope
1
9.7
- noun
- /ˈɛnvəˌloʊp/
- Specialized
- A back-of-the-envelope calculation gives some indication of a relevant time scale for the terrestrial nitrogen deposition problem.
- envelope curve
- temporal envelope
- movement envelope
Examples
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So isn't it time now for someone to come out with a show that just pushes the envelope a a little bit?
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Well, this is an envelope on this set of plane waves.
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It's called "back of the envelope" because it can be written out on a small sheet of paper...
Blog text (28) -
And then this is the decay for the envelope object.
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In fact, the real part of the envelope doesn't change.
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Determining the envelope of a macromolecule can serve as a first step toward detailed structure determination.
Academic text (2006) -
Part of an envelope rose above a cabinet in a neat isosceles triangle.
Fiction book (1992) -
I am just trying to make a back-of-the-envelope calculation to see if it's even plausible.
Blog text (1) -
The solid and broken lines in the data-line waveform represent the envelope of possible values of the data voltage.
Academic text (2000) -
The envelope of the sound waves determined how loud the music would be.
Idioms
Compounds
- Specialized
Outer parts of a flower, like small leaf parts and colorful petals, that surround its male and female parts
Surface Forms
Etymology
Envelope comes from French parts en- 'in' and velop 'wrap'. In math, an envelope is the outer line that 'wraps' a family of curves and shows their common boundary.