
1) Adventitia 2) Albuginea 3) Tunic
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1) Adventitia 2) Biological nomenclature 3) Membrane 4) Mississippi gambling center 5) Tissue layer 6) Tunic
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https://www.crosswordclues.com/clue/tunica
[biology] In biology, a tunica (ə) (plural tunicae) is a layer, coat, sheath, or similar covering. The word came to English from the New Latin of science and medicine. Its literal sense is about the same as that of the word tunic, with which it is cognate. In biology one of its senses used to be the taxonomic name of a genus of plants, but...
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http://en.wikipedia.org/wiki/Tunica_(biology)

(from the article `plant development`) ...may appear in the distribution of division planes only in the extreme tip region. Over the outer part of the apex, the cells often appear to lie ...
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http://www.britannica.com/eb/a-z/t/92

Tunic.
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http://www.encyclo.co.uk/local/20764

Synonym: tunic. ... Origin: L. A coat ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973

(too´nĭ-kә) Latin word meaning tunic or coat. In anatomy, it is used to designate a membranous covering of an organ or a distinct layer of the wall of a hollow structure, as a blood vessel.
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http://www.encyclo.co.uk/local/21001

A tunic, which was a simple, shirt-like garment, however was also used in: - tunica palmata - a gold embroidered purple garment worn by a triumphator.
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Type: Term Pronunciation: tū′ni-kă, too′ni-sē Synonyms: tunic
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http://www.medilexicon.com/medicaldictionary.php?t=94987

Latin = shirt; hence a covering.
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https://www.encyclo.co.uk/local/21450
No exact match found.