What is the meaning of Significant_digit?

5-letter words containing

• 5-letter words containing e

• 5-letter words containing i

• 5-letter words containing f

• 5-letter words containing w

• 5-letter words containing d

5-letter words starting with

• 5-letter words starting with e

• 5-letter words starting with k

• 5-letter words starting with e

• 5-letter words starting with i

• 5-letter words starting with t

5-letter words in the middle

• 5-letter words in the middle w

• 5-letter words in the middle i

• 5-letter words in the middle r

• 5-letter words in the middle g

• 5-letter words in the middle s

5-letter words ending with

• 5-letter words ending with i

• 5-letter words ending with a

• 5-letter words ending with s

• 5-letter words ending with e

• 5-letter words ending with i

5-letter words excluding

• 5-letter words excluding e

• 5-letter words excluding e

• 5-letter words excluding t

• 5-letter words excluding a

• 5-letter words excluding i