Branch of science (9)
'branch of science' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for chemistry that I've seen before include "Science; emotional attraction between a couple" , "Science that deals with the properties of substances." , "Why lovers love" , "What may be taught at school" , "The science of matter" .)
'branch of science' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for physics that I've seen before include "School science subject" , "One of the sciences" , "Properties-of-matter science" , "Science of matter and energy" , "Purges" .)