internal respiration

NOUN
20 LETTERS · STARTS WITH I

internal respiration is a valid 20-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1T1E1R1N1A1L1R1E1S1P3I1R1A1T1I1O1N1
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does internal respiration mean?

NOUN · 1 SENSE
1

The metabolic processes whereby certain organisms obtain energy from organic molecules; processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood to be transported to the lungs.