It's really two words, but "do over."
The second letter of the seven letter word meaning "one-fourth" is "u." The word is "quarter."u as in quarter
U is the second letter in the word quarter.
The second letter is "e".
u is the 2nd letter
a as in famished
MAGNITUDE
u as in quarter
quiet
U
quarter
The letter u (quarter)
One fourth is a quarter. The second letter of quarter is 'u'