double-helical
adjective see double helix

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • double-helical — adjective see double helix …   Useful english dictionary

  • double-helical gear — /dub euhl hel i keuhl/. See herringbone gear. * * * …   Universalium

  • double helical gear — noun → herringbone gear …   Australian English dictionary

  • double helical gear — A gear with two rows of inclined teeth, each forming an open V or chevron. Also called herringbone gear …   Dictionary of automotive terms

  • double-helical gear — /dub euhl hel i keuhl/. See herringbone gear …   Useful english dictionary

  • Double helix (disambiguation) — In geometry, a double helix (plural double helices) is a pair of congruent geometrical helices with the same axis, differing by a translation along the axis. The term is most often used in reference to the nucleic acid double helix, the dominant… …   Wikipedia

  • helical gear — A gear that has the teeth cut at an angle to the center line of the gear. This kind of gear is useful because there is no chance of intermittent tooth to tooth operation because there are at least two teeth engaged at any time. Also helical gears …   Dictionary of automotive terms

  • helical — A spiralling shape such as that made by a coil spring. In the shape of a helix. Also see double helical gear …   Dictionary of automotive terms

  • double helix — noun Date: 1954 a helix or spiral consisting of two strands in the surface of a cylinder that coil around its axis; especially the structural arrangement of DNA in space that consists of paired polynucleotide strands stabilized by cross links… …   New Collegiate Dictionary

  • Double-stranded RNA viruses — Electron micrograph of rotaviruses. The bar = 100 nm Virus classification Group: Group III (ds …   Wikipedia

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