definition
A primary election; a preliminary election to select a political candidate of a political party.
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The first year of grade school.
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A base or fundamental component; something that is irreducible.
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The most massive component of a gravitationally bound system, such as a planet in relation to its satellites.
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A primary school.
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Any flight feather attached to the manus (hand) of a bird.
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A primary colour.
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Primary site of disease; original location or source of the disease.
example
most common primaries
definition
A directly driven inductive coil, as in a transformer or induction motor that is magnetically coupled to a secondary