What is the meaning of Significant_digit?

5-letter words containing

• 5-letter words containing s

• 5-letter words containing u

• 5-letter words containing i

• 5-letter words containing s

• 5-letter words containing i

5-letter words starting with

• 5-letter words starting with f

• 5-letter words starting with n

• 5-letter words starting with i

• 5-letter words starting with e

• 5-letter words starting with t

5-letter words in the middle

• 5-letter words in the middle t

• 5-letter words in the middle e

• 5-letter words in the middle i

• 5-letter words in the middle s

• 5-letter words in the middle e

5-letter words ending with

• 5-letter words ending with o

• 5-letter words ending with e

• 5-letter words ending with k

• 5-letter words ending with e

• 5-letter words ending with m

5-letter words excluding

• 5-letter words excluding i

• 5-letter words excluding a

• 5-letter words excluding u

• 5-letter words excluding y

• 5-letter words excluding d