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n. pl. su·per·he·lix·es or su·per·hel·i·ces (hĕl′ĭ-sēz′, hē′lĭ-)
A structure in which a helix is itself coiled into a helix, as in a DNA supercoil.

su′per·hel′i·cal (-hĕl′ĭ-kəl, -hē′lĭ-) adj.
su′per·hel′i·cal·ly adv.


n, pl -helices (-ˈhɛlɪˌsiːz) or -helixes
(Biochemistry) biochem a molecular structure in which a helix is coiled into a higher-order helix


(ˈsu pərˌkɔɪl)

a twist formed by intertwining strands of DNA or by protein chains.
su′per•coiled`, adj.
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References in periodicals archive ?
Three of these helical strands then twist around on one another, like the strands of a rope, in a right-handed superhelix, to make up the complete molecule.
It is the number of turns that the duplex axis makes about the superhelix axis.
Presently new STE morphologies are being generated with by use of advanced fabrication knowledge, as can be seen in Figure 4(b) with the creation of a double helix column, termed a superhelix (Sunal 1999; Messier et al.