not derived from, caused by, or based on anything else; original.
his expert handling of the primary and secondary literature is clear on every page
4
Chemistry
(of an organic compound) having its functional group located on a carbon atom which is bonded to no more than one other carbon atom.
a primary alcohol
5
Ecology
denoting or relating to organisms that produce organic compounds from simple substances such as water and carbon dioxide, typically by photosynthesis.
the organic matter is formed by primary producers such as plants and plankton
6
relating to or denoting the input side of a device using electromagnetic induction, especially in a transformer.
7
Geology
former term for Paleozoic.
名词
1
(in the US) a preliminary election to appoint delegates to a party conference or to select the candidates for a principal, especially presidential, election.
2
a primary color.
3
Geology
the Primary or Paleozoic era.
动词
1
(in the US) run against (the current holder of a political office) in the preliminary election a party uses to select its candidate for the general election.
