What is the meaning of Significant_digit?

5-letter words containing

• 5-letter words containing y

• 5-letter words containing r

• 5-letter words containing o

• 5-letter words containing n

• 5-letter words containing a

5-letter words starting with

• 5-letter words starting with i

• 5-letter words starting with g

• 5-letter words starting with c

• 5-letter words starting with i

• 5-letter words starting with m

5-letter words in the middle

• 5-letter words in the middle a

• 5-letter words in the middle i

• 5-letter words in the middle a

• 5-letter words in the middle u

• 5-letter words in the middle a

5-letter words ending with

• 5-letter words ending with e

• 5-letter words ending with c

• 5-letter words ending with u

• 5-letter words ending with i

• 5-letter words ending with d

5-letter words excluding

• 5-letter words excluding n

• 5-letter words excluding u

• 5-letter words excluding t

• 5-letter words excluding e

• 5-letter words excluding r