spiral
(ˈspaɪ rəl)
Random House Webster's College Dictionary
a helix.
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helical
(ˈhɛl ɪ kəl, ˈhi lɪ-)
Random House Webster's College Dictionary
pertaining to or having the form of a helix; spiral.
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sticky end
(sticky end)
Princeton's WordNet
an end of DNA in which one strand of the double helix extends a few units beyond the other
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garden snail
(garden snail)
Princeton's WordNet
any of several inedible snails of the genus Helix; often destructive pests
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spiral spring
(ˈspaɪ rəl)
Random House Webster's College Dictionary
a form of spring consisting of a wire coiled in a helix.
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helix angle
(helix angle)
Princeton's WordNet
the constant angle at which a helix cuts the elements of a cylinder or cone
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helixes
Webster Dictionary
of Helix
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helices
Webster Dictionary
of Helix
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dna chip
(gene chip, DNA chip)
Princeton's WordNet
a microchip that holds DNA probes that form half of the DNA double helix and can recognize DNA from samples being tested
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gene chip
(gene chip, DNA chip)
Princeton's WordNet
a microchip that holds DNA probes that form half of the DNA double helix and can recognize DNA from samples being tested
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heliciform
Webster Dictionary
having the form of a helix; spiral
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helicoid
(ˈhɛl ɪˌkɔɪd, ˈhi lɪ-)
Random House Webster's College Dictionary
a warped geometric surface generated by a straight line moving so as to cut or touch a fixed helix.
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strombuliform
Webster Dictionary
coiled into the shape of a screw or a helix
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twist
Webster Dictionary
to follow a helical or spiral course; to be in the form of a helix
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antihelix
Webster Dictionary
the curved elevation of the cartilage of the ear, within or in front of the helix. See Ear
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deoxyribonucleic acid
(deoxyribonucleic acid, desoxyribonucleic acid, DNA)
Princeton's WordNet
(biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
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desoxyribonucleic acid
(deoxyribonucleic acid, desoxyribonucleic acid, DNA)
Princeton's WordNet
(biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
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dna
(deoxyribonucleic acid, desoxyribonucleic acid, DNA)
Princeton's WordNet
(biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
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ivy
(ˈaɪ vi)
Random House Webster's College Dictionary
a climbing vine, Hedera helix, of the ginseng family, native to Eurasia and N Africa, having smooth, shiny evergreen leaves: widely cultivated.
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helicin
Webster Dictionary
a glucoside obtained as a white crystalline substance by partial oxidation of salicin, from a willow (Salix Helix of Linnaeus.)
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ring
(ɪŋ)
Random House Webster's College Dictionary
a single turn in a spiral or helix or in a spiral course.
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helical
Webster Dictionary
of or pertaining to, or in the form of, a helix; spiral; as, a helical staircase; a helical spring
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spirifer
Webster Dictionary
any one of numerous species of fossil brachipods of the genus Spirifer, or Delthyris, and allied genera, in which the long calcareous supports of the arms form a large spiral, or helix, on each side
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dna
(ˈdiˌmɑrk)
Random House Webster's College Dictionary
deoxyribonucleic acid: an extremely long, double-stranded nucleic acid molecule arranged as a double helix that is the main constituent of the chromosome and that carries the genes as segments along its strands: found chiefly in the chromatin of cells and in many viruses.
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snail
Webster Dictionary
any one of numerous species of terrestrial air-breathing gastropods belonging to the genus Helix and many allied genera of the family Helicidae. They are abundant in nearly all parts of the world except the arctic regions, and feed almost entirely on vegetation; a land snail
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pulmonata
Webster Dictionary
an extensive division, or sub-class, of hermaphrodite gastropods, in which the mantle cavity is modified into an air-breathing organ, as in Helix, or land snails, Limax, or garden slugs, and many pond snails, as Limnaea and Planorbis
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ivy
Webster Dictionary
a plant of the genus Hedera (H. helix), common in Europe. Its leaves are evergreen, dark, smooth, shining, and mostly five-pointed; the flowers yellowish and small; the berries black or yellow. The stem clings to walls and trees by rootlike fibers
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helix
Webster Dictionary
a nonplane curve whose tangents are all equally inclined to a given plane. The common helix is the curve formed by the thread of the ordinary screw. It is distinguished from the spiral, all the convolutions of which are in the plane
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volute
Webster Dictionary
a spiral scroll which forms the chief feature of the Ionic capital, and which, on a much smaller scale, is a feature in the Corinthian and Composite capitals. See Illust. of Capital, also Helix, and Stale
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spiral
Webster Dictionary
a plane curve, not reentrant, described by a point, called the generatrix, moving along a straight line according to a mathematical law, while the line is revolving about a fixed point called the pole. Cf. Helix
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