Computing pioneer Lovelace (3)
I believe the answer is:
'computing pioneer 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 "-- Lovelace, pioneer in computing" , "Girl's name, one letter short of a man's name" , "girl?" , "Woman" , "Palindromic girl's name" .)