01 a. Later in time; hence, later in the order of proceeding or moving; coming after; -- opposed to prior.
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1.
Later in time; hence, later in the order of proceeding or moving; coming after; -- opposed to prior.“Hesiod was posterior to Homer.” — Broome.
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2.
Situated behind; hinder; -- opposed to anterior.
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3.
At or toward the caudal extremity; caudal; -- in human anatomy often used for dorsal.(Anat.) Also: dorsal
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4.
On the side next the axis of inflorescence; -- said of an axillary flower.(Bot.)