# spiral vs spiro

> English confusable word pair

## The two words

### spiral
*noun · IPA /ˈspaɪɹəl/ · frequency rank #8,986*
A curve that is the locus of a point that rotates about a fixed point while continuously increasing its distance from that point.

### spiro
*noun · IPA /ˈspɪɹəʊ/ · frequency rank #40,900*
A polycyclic compound or system that contains a single atom as the only common member of two rings.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/spiral-vs-spiro