Anisopoikilocytosis

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L. an = without, iso = equal, Gr. poikilos = varied , L. cyt = cell and -osis = condition Anisopoikilocytosis refers to a variance in size (anisocytosis) and shape (poikilocytosis) of a red blood…

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Annulus

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Gr. annus = ring, ulnus = a diminuitive suffix. Applied to many small, ring-like structures (e.g. Ligg. anulare of the hand)

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Aorta

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Gr. perhaps from aeirein = to lift up, or to be hung. The word was taken over into Latin as aorte, and first appeared as aorta in English in 1594.

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Apical

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L. apex  = tip, top or pointed end. The genitive of apex is apicis, hence the adjective apical.

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Aponeurosis

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Gr. apo= from, and neuron = anything of fibrous nature. Previous to Aristotle the word neuron had this meaning, and in Athens a cobbler was a neurorrhaphos or one who sews with tendons. This offers…

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Appendix

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L. appendere = to hang upon, from ad = to, and pendere = to hang. Used since the early seventeent century to mean a small process developed from the surface of an organ.

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Aqueduct

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L. aqua = water, and ductus = a canal. In Latin the word was spelled aquaeductus, therefore the spelling with an e.

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