| a combining form meaning “respiration,” used in the formation of compound words: spirograph. |

| a combining form meaning “coil,” “spiral,” used in the formation of compound words: spirochete. |

| spiro- pref. Respiration: spirometer. [From Latin spīrāre, to breathe.] |
spiro- or spir-
pref.
Spiral; coil; coil-shaped: spirillar.
Breath; breathing; spirograph.