Word of the Day
Apps by Dictionary
It’s about time. We are now on Instagram!
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for
Without coolant, the temperature in the
will rise unchecked.
As it decays in a
, its byproducts produce more neutrons per collision than conventional fuel.
In this system, the heat is always generated in about the same area within the
-near the center.
In naval nuclear propulsion plants, fissioning of uranium atoms in the
Heat is transferred from the
by the primary liquid-salt coolant to an intermediate heat-transfer loop.
technology will either be a prismatic block or pebble bed concept.
The light from the sensor is guided out from the
region using a hollow-core optical wave guide.
Water is heated through the controlled splitting of uranium atoms in the
and turns to steam.
Discover our greatest slideshows
13 Essential Literary Terms
Know These 9 Commonly Confused...
Carried Away: 9 Words About Wind
7 Books Written About World War I
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 reactor core
reaction of degeneration
read 'em and weep
read a lecture
read between the lines
read from the same page
read like an open book
read my lips
read only memory
read out of
read someone his rights
read someone like a book
read someone loud and clear
read someone's mind
read the riot act
read up on
read, sir herbert