A dense, white, fibrous membrane or tissue layer, particularly the tough outer covering of the eye or testis.
From Latin albugineus meaning 'whitish,' referring to the pale or white appearance of these membranous structures in anatomy.
The albuginea of the eye is so tough and impenetrable that surgeons treat it with enormous respect—it's one of nature's most formidable barriers protecting our eyeballs from damage.
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