The most common and most likely answer to this crossword clue is the 8 letter word ROBOTICS
I've seen this crossword clue in The Times
R
O
B
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T
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More clues leading to the result ROBOTICS
- Strips covering of ear in technologist's domain
- First of cosmonauts in orbit so developed branch of technology
- Form of street dance associated with jerks?
- Welcomed by mugs, auditory technology that’s mechanical
- Power to implement a programme– nothing personal.
- Branch of technology beginning to reduce and almost stop involuntary movements
- Take love mannerisms for a subject of science fiction
Buddy explains!

The straight part
We know that "technologist's domain" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case technologist's domain = robotics.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ROBOTICS mean?
ROBOTICS noun- The science and technology of robots, their design, manufacture, and application