# helical

/ˈhɛɫɪkəɫ/ (US) · /hˈɛlɪkəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/helical
Updated: 2026-05-25

## Definition

shaped like a spiral or a spring. You use this to describe things that twist around a central line, like a DNA strand or a screw.

For teachers: shaped like a helix, or a spiral that winds around a central axis. Often describes structures in biology, engineering, or mathematics.

## Examples

- The DNA molecule has a famous helical shape.
- The staircase was designed with a helical pattern, allowing it to rise smoothly within a small footprint.
- The satellite's trajectory followed a helical path around the planet, maintaining a stable orbit while gradually adjusting its altitude for the final descent.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.