tapetum (plural tapeta)
(anatomy) A membranous layer of tissue.
(anatomy) The pigmentary layer of the retina.
(botany) The cells on the outside of an archesporium.
Source: Wiktionary
Ta*pe"tum, n. Etym: [NL., from L. tapete a carpet, a tapestry.] (Anat.)
Definition: An area in the pigmented layer of the choroid coat of the eye in many animals, which has an iridescent or metallic luster and helps to make the eye visible in the dark. Sometimes applied to the whole layer of pigmented epithelium of the choroid.
Source: Webster’s Unabridged Dictionary 1913 Edition
23 November 2024
(adjective) concerned primarily with theories or hypotheses rather than practical considerations; “theoretical science”
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
