Word of the Day
Apps by Dictionary
Stories We Like: Novels For Language Lovers
the scientific investigation of a new treatment that has shown some benefit in animal or laboratory studies, but that has not yet been proven effective in humans.
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for
To claim that people should risk themselves, out of beneficence, to participate in a
The system essentially functions as a
in a test tube.
The efficacy of such a program would be easy to test in an educational
costing no more than a few million dollars.
The drug will be tested in a large multi-center
to see whether it meets its endpoints in humans.
They have conducted the largest
ever designed to compare talk therapy with chemical antidepressants.
Each is running a
of an aspiring drug.
Because of this, one of the alluring features of a
is that subjects are supplied with the test drug for free.
During her research, she found that data was wasted once a
The two problems appear to be related, and a new
reports that losing weight may help relieve incontinence.
But there was only one
to compare reserpine to a placebo with depressed patients.
Discover our greatest slideshows
Q Without U: 9 Must-Know Terms for...
From the Trenches: Words of World...
13 Essential Literary Terms
8 Words That Are Older Than You...
Browse more topics on our blog
What Is the Difference Between Discreet and Discrete?
Learn the correct uses of these two commonly confused homophones.
What Character Was Removed from the Alphabet?
What mistaken pronunciation gave this character its name?
This small mark has two primary uses: to signify possession or omitted letters.
How Do I Get a Word into the Dictionary?
People invent new words all the time, but which ones actually make it?
Word of the Day
Difficulty index for
Few English speakers likely know this word
Word Value for
Words With Friends
Nearby words for clinical trial
clinical nurse specialist