rest energy

NOUN /rɛst_'ɛnərdʒi/
11 LETTERS · STARTS WITH R

rest energy is a valid 11-letter word worth 14 points in Scrabble and 15 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
R1E1S1T1E1N1E1R1G2Y4
1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 2 + 4 =14 PTS
DOUBLE WORD → 28TRIPLE WORD → 42
MEANING

What does rest energy mean?

NOUN · 1 SENSE
1

The energy equivalent to the mass of a particle at rest in an inertial frame of reference; equal to the rest mass times the square of the speed of light.