"drastically smaller" is a correct and usable phrase in written English.
It means that something has decreased significantly in size or amount. Example: "After implementing new cost-cutting measures, the company's expenses were drastically smaller than the previous quarter."
If such a Who's Who were compiled of current writers, it would be drastically smaller.
Back in the real world, people instead sit squinting at a single, drastically smaller screen.
Anyway, the rest of the world may not be ready to handle a drastically smaller U.S. trade deficit.
But Lucent is drastically smaller than when the company had annual revenues exceeding $30 billion in the late 1990's.
The number of buses needed to transport school children, the distribution of potassium iodide pills and so forth -- would be drastically smaller than in a 10-mile evacuation.
Donizetti's tenor parts — requiring a different physical technique, lighter than the sound we are used to and benefiting from what were often drastically smaller opera houses — were also tuned lower.
In the other cases, the estimated common factors are positively related to (ln x_t) but the linear correlations are drastically small.
U-bending experiments have shown that the designed sandwich plates can be bent successfully with a drastically small relative bending radius (R/H) of 3.33.
In principle, as long as the PDMS 'wets' the mold, the filling time (∝1/R) should not increase drastically for smaller hole sizes (actually, in our experiment, the smaller holes could not be filled by increasing the filling time).
The copolymer molecular weight decreased drastically when small amounts of norbornene were added in reactions which lasted 30 min.
The move has drastically impacted small businesses, schools, nonprofits and other organizations from being able to effectively and affordably conduct business on the App Store.
