tunica

American  

[too-ni-kuh, tyoo-] / ˈtu nɪ kə, ˈtyu- /

noun

Anatomy, Zoology, Botany.

plural

tunicae

1. a tunic.

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tunica British  

/ ˈtjuːnɪkə /

noun

1. anatomy tissue forming a layer or covering of an organ or part, such as any of the tissue layers of a blood vessel wall

2. botany the outer layer or layers of cells of the meristem at a shoot tip, which produces the epidermis and cells beneath it Compare corpus

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Etymology

Origin of tunica

< New Latin, special use of Latin tunica tunic

Example Sentences

These mimic the layered structure of the native vascular wall, which, from inside out, is composed of the tunica intima, tunica media and tunica adventitia tissues.

From Science Daily • Jan. 13, 2024

The tunica externa protects the vessel from wear and tear and provides support for the vessel.

From Textbooks • Jun. 9, 2022

Arteries, arterioles, venules, and veins are composed of three tunics known as the tunica intima, tunica media, and tunica externa.

From Textbooks • Jun. 19, 2013

Beneath the tunica albuginea is the cortex, or outer portion, of the organ.

From Textbooks • Jun. 19, 2013

I replied, with a look of anxious importance, making a few doctor's grimaces; "have you no sensations of paralysis in the tunica choroidaia?"

From Hungarian Sketches in Peace and War Constable's Miscellany of Foreign Literature, vol. 1 by Jókai, Mór