Mathematician Lovelace (3)
I believe the answer is:
ada
'mathematician lovelace' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ada that I've seen before include "Girl's name, one letter short of a man's name" , "Programming language" , "Computer lang.; f. name" , "Palindromic girl's name" , "Novel by Vladimir Nabokov" .)