exhalation
/ˌɛk.səˈleɪ.ʃən/ · ex·hal·a·tion
noun
- The act or process of exhaling; breathing out. She took a deep breath and released a slow exhalation of relief.
- Something that is exhaled, especially a vapor, fume, or steam. The garden was scented by the sweet exhalations of blooming roses.
- A bright phenomenon in the sky; a meteor. The night sky was lit by a sudden exhalation that streaked across the horizon.
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Did you know? In the 17th century, astronomers described meteors as ‘exhalations of the heavens’, a poetic metaphor that linked the word to celestial phenomena.