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n. pl. ta·pe·ta (-tə)
1. Botany A nutritive tissue that surrounds certain developing spores, particularly the microspores within an anther.
2. Anatomy
a. A reflective membrane in the back of the eye of many animals that are active during low-light conditions.
b. A layer of fibers of the corpus callosum forming the roof of part of the lateral ventricle of the brain.

[Medieval Latin tapētum, coverlet, from Latin tapēte, *tapētum, from Greek tapēs, tapēt-; see tapestry.]

ta·pe′tal (-pēt′l) adj.


n, pl -ta (-tə)
1. (Botany) a layer of nutritive cells in the sporangia of ferns and anthers of flowering plants that surrounds developing spore cells
2. (Zoology)
a. a membranous reflecting layer of cells in the choroid of the eye of nocturnal vertebrates
b. a similar structure in the eyes of certain nocturnal insects
3. (Anatomy) anatomy a covering layer of cells behind the retina of the eye
[C18: from New Latin, from Medieval Latin: covering, from Latin tapēte carpet, from Greek tapēs carpet]
taˈpetal adj


(təˈpi təm)

n., pl. -ta (-tə).
1. Bot. a layer of nutritive tissue in a developing sporangium or anther that is absorbed as the spore matures.
2. Anat. any of certain membranous layers or layered coverings, as in the choroid coat in certain animals.
[1705–15; < New Latin; Medieval Latin tapētum coverlet (Latin, only pl.) < Greek tapēt-, s. of tápēs carpet]
ta•pe′tal, adj.
References in periodicals archive ?
Work will soon commence to convert a full circuit of the track to the artificial Tapeta surface, while there will also be floodlights along the straight mile.
The track's owner Arena Racing Company revealed yesterday that the most disruptive work on the PS11 million project at Newcastle, which includes the conversion of the Flat turf course to a Tapeta all-weather track, would have been completed by the start of November, meaning the jumps fixtures on November 13 and 28 and December 10 and 19 can be held there.
Since his retirement in 2007, the 65-year-old has oversaw the development of the Tapeta allweather surface.
This was the first time in six years that the Al Maktoum, a race that is regarded as an early pointer to the $10 million Dubai World Cup (G1), was being run on dirt following the removal of the Tapeta all-weather track at the iconic venue.
But experts who do follow every moment of the DIRC tell me criticism of the Tapeta surface -- ripped up this week to be replaced by dirt -- is ill-informed nonsense.
The five-year-old mare had the option of either the mile-and-a-quarter Dubai World Cup on the Tapeta track or the nine-furlong Dubai Duty Free on the Meydan turf course.
Trained by Mahmoud Al Zarouni, he and jockey Mickael Barzalona were chased home by stable companion Capponi in the 2000m Tapeta feature last year and the pair are joined in the race this year by three trained by Godolphin's other trainer, Saeed Bin Surour.
8220;On our Tapeta track there were 6600 runners in 800 races in 2011 and only 2 catastrophic breakdowns, which makes it one of the safest tracks in the United States,” said Mike Tamburelli, VP and General Manager.
Summary: ROCKET Man blasted away and around the 1,200m Tapeta course to claim the honours from the first of the night's four big races, the $2 million Dubai Golden Shaheen.
Dickinson will now concentrate all his efforts into developing the all-weather surface Tapeta, which is being increasingly used worldwide.
I need 100 per cent of my time to concentrate on Tapeta Footings," said Dickinson.
I wanted to have the best racing surface available to ensure the health of both horse and rider" said Frank Stronach, Chairman and Interim Chief Executive Officer of MEC, "We looked at a number of different options available to us and are very pleased with our selection of Tapeta.