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...and is worth 6 points by itself.

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Radii Definition

noun

A plural of radius.

from The American Heritage Dictionary of the English Language, 4th Edition

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Top Words by points	Points
radii	6

2 letter words with RADII	Points
ad	3
ai	2
ar	2
da	3
id	3

3 letter words with RADII	Points
aid	4
air	3
rad	4
rai	3
ria	3
rid	4

4 letter words with RADII	Points
arid	5
irid	5
raid	5

5 letter words with RADII	Points
radii	6

Found 15 words in 0.1308 seconds