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  • The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius. The Trifid Nebula was the subject of an investigation by astronomers using the Hubble Space Telescope in 1997, using filters that isolate. — “Trifid Nebula - Wikipedia, the free encyclopedia”,
  • That is, while the bifid uses the Polybius square to turn each symbol into coordinates on a 5 × 5 (or 6 × 6) square, the trifid turns them into coordinates on a 3 × 3 × 3 cube. As with the bifid, this is then combined with transposition to achieve diffusion. — “Trifid cipher - Wikipedia, the free encyclopedia”,
  • See wikt:trifid [edit] Distinguish from. Triffid, a fictional dangerous mobile plant in the 1951 novel The Day of the Triffids by John Wyndham. This disambiguation page lists articles associated with the same title. If an internal link led you. — “Trifid - Wikipedia, the free encyclopedia”,


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