Inorganic (7)
I believe the answer is:
mineral
'inorganic' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for mineral that I've seen before include "E.g. bauxite, quartz" , "Ore; soft drink" , "Substance needed for health; ore" , "Zinc or magnesium, say" , "Gypsum or magnesium, say" .)