Assess again engineers by lake full of arsenic and uranium (9)

I believe the answer is:

remeasure

I'm a little stuck... Click here to teach me more about this clue!

'assess again' is the definition.
('measure' can be a synonym for 'assess' so perhaps 'remeasure' is OK for 'assess again')

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for remeasure that I've seen before include "rank again" , "Again ascertain length" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.