Chemistry. Forming an ultimate or basic constituent of which a more complex whole is composed. Now chiefly historical.
| 单词 | θ69208 | 
| 释义 | the world > matter > chemistry > elements and compounds > 			[adjective]		 > of or relating to compounds > by number of contitutive elements > one (1)		 primary1802 Chemistry. Forming an ultimate or basic constituent of which a more complex whole is composed. Now chiefly historical. | 
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