"expand the envelope" is a correct and usable phrase in written English.
It means to push or extend the limits or boundaries of something. Example: "Our marketing team needs to come up with innovative ideas to expand the envelope and attract new customers."
It's a wonderful driver's car made by a company that is always trying to expand the envelope and also frequently thinks it knows better than its customers.
"Smartwatches have to have like a one-inch screen," Harrison said, "so how do you expand the envelope of interaction without sticking a giant screen on it?
Therefore, solar sails can expand the envelope of possible missions, enabling new high-energy mission concepts that are essentially impossible for conventional reaction propulsion, and enhancing current mission concepts by lowering launch mass and reducing trip times.
Because of the isotropic and diagonal form of the operator it is possible to classify its eigenstates similarly to atomic systems as the states of s-, p-, d-type, etc. Accordingly, one may expand the envelope functions over these eigenstates as: (6).
They can expand the envelope beyond what a CNN anchor can be.
Ultimately, whether they steal market share or not, Kickstarter companies are expanding the envelope of what's possible.
His terrifying and hysterically funny portraits of angry women in family crisis in that play expanded the envelope of dysfunction and cruelty and won both the Pulitzer Prize and a fistful of Tony Awards two years ago.
NASA has conducted extensive research and produced a series of instructional videos on various aspects of icing, and crews have trained for icing conditions, but no decision has been made about expanding the "envelope" of weather conditions for which planes must qualify to include the droplets.
The calculation was performed by expanding the envelope functions in plane waves.
Sgt. Pepper was recorded over 8 months employing hundreds of hours of Abbey Road studio time, engineers, and elaborate experiments in expanding the envelope of recording and performance technology.
Other challenges include expanding the envelope of druggability for less tractable targets, understanding and overcoming drug resistance, and designing intelligent and effective drug combinations.
