A trapdoor is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof. It is traditionally small in size. It was invented...

In theoretical computer science and cryptography, a trapdoor function is a function that is easy to compute in one direction, yet difficult to compute...

trapdoor is a form of breech-loading mechanism for rifles in which a hinged breechblock rotates up and forward, resembling the movement of a trapdoor...

Trapdoor spider is a common name that is used to refer to various spiders from several different groups that create burrows with a silk-hinged trapdoor...

thereupon commence: Don't you open that trapdoor, you're a fool if you dare! Stay away from that trapdoor, 'cause there's something down there... Creepy...

that construct burrows with a cork-like trapdoor made of soil, vegetation, and silk. They may be called trapdoor spiders, as are other, similar species...

the fifth variation of the Allin trapdoor design, and was named for its hinged breechblock, which opened like a trapdoor. The infantry rifle model featured...

Look up trapdoor in Wiktionary, the free dictionary. A trapdoor is a door set into a floor or ceiling. Trapdoor or Trap Door may also refer to: Trap Door...

Bothriocyrtum californicum, the California trapdoor spider, is a species of spider in the family Halonoproctidae. It is found in the United States. Males...

Trapdoor Inc. was a Canadian video game developer based in Montreal. Founded in August 2008 by Ken Schachter, the company developed Warp and co-published...

Aptostichus barackobamai (also known as the Barack Obama trapdoor spider) is a large species of trapdoor spider in the family Euctenizidae named after the 44th...

58-60 caliber trapdoor rifle. Springfield Model 1866 – .50-70 caliber trapdoor rifle. Springfield Model 1868 – .50-70 caliber trapdoor rifle. Springfield...

The family Cyrtaucheniidae, known as wafer-lid trapdoor spiders, are a widespread family of Mygalomorphae spiders. Wafer-lid spiders are generally large...

hourglass spider (which generally refers to its genus), is a species of trapdoor spider of the genus Cyclocosmia, which refers specifically to mygalomorphus...

Aptostichus angelinajolieae, the Angelina Jolie trapdoor spider, is a species of Euctenizidae, nocturnal arthropods who seize their prey after leaping...

continents except Antarctica. Many members are known as trapdoor spiders due to their creation of trapdoors over their burrows. Other prominent groups include...

based on a trapdoor function whose security, like that of RSA, is related to the difficulty of integer factorization. The Rabin trapdoor function has...

The Nihoa trapdoor spider or Nihoa mahina is a trapdoor spider endemic to Nihoa, Hawaii. These spiders are hunters that dig a hole near rocks cover it...

Lizard Wizard chronology Singles from Paper Mâché Dream Balloon "Paper Mâché Dream Balloon" Released: 17 August 2015 "Trapdoor" Released: 21 September 2015...

Trapdoor Fucking Exit is the third studio album by The Dead C, released in 1990 through Precious Metal. In 1998, The Wire included Trapdoor Fucking Exit...

50-70 cartridge, chambered in trapdoor conversions of rifled muskets that had been used in the American Civil War. The trapdoor mechanism continued usage...

Migas plomleyi, also known as Plomley's trapdoor spider, is a species of tree trapdoor spider in the Migidae family. It is endemic to Australia. It was...

the end of the American Civil War, and is known by collectors as the "Trapdoor Springfield".[citation needed] The original 45-70 loading was designated...

Jason E. (2021), "Taxonomic revision of the New World members of the trapdoor spider genus Ummidia Thorell (Araneae, Mygalomorphae, Halonoproctidae)"...

Idiopidae, also known as armored or spiny trapdoor spiders, is a family of mygalomorph spiders first described by Eugène Simon in 1889. Idiopidae build...

Idioctis yerlata, also known as the intertidal trapdoor spider, is a species of mygalomorph spider in the Barychelidae family. It is endemic to Australia...

bit by each round n.: 132  Hard-core predicates of trapdoor one-way permutations (known as trapdoor predicates) can be used to construct semantically secure...

The Chinese mystery snail, black snail, or trapdoor snail (Cipangopaludina chinensis), is a large freshwater snail with gills and an operculum, an aquatic...

spider Family Barychelidae Idioctis spp., Intertidal trapdoor spider Idiommata spp., Brushfooted trapdoor spider Seqocrypta jakara, Brush footed spider Family...

Liphistiidae, the "trapdoor spiders" of the family Ctenizidae and many tarantulas are ambush predators that lurk in burrows, often closed by trapdoors and often...