Superhelical

Part of speech: adjective

Definitions

1. Describing a structure that twists upon itself in a helical manner, often occurring in biological molecules like DNA
2. denoting a configuration that exhibits supercoiling with multiple turns of a helix
3. characterizing circular DNA that is further twisted beyond the standard helical form

Etymology: Superhelical is a plain technical compound: the prefix "super-", meaning "above" or "over" and descending from the Latin "super", joined to "helical", the adjective from "helix", a spiral. Together they describe a helix that is itself coiled into a larger helix, the way a telephone cord or a strand of DNA can twist back on itself. The prefix carries the sense of an extra layer of coiling on top of the first. Because the word is built from familiar English parts, it needs no special history beyond that. Its meaning follows directly from its pieces: "super-" adds a second level of structure to "helical". The Latin ancestry of "super" traces back through Proto-Italic to older Indo-European roots, but in English the word's story is simply one of combining two existing elements.