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Definition of: pastille
(pas·tēl′, -til′) noun
1. A compound of aromatic substances with niter for fumigating.
2. A troche; lozenge.
3. A flavored confection.
4. A small paper disk coated with a chemical that changes color on exposure to X-rays: used to determine X-ray dosages.
5. Pastel1 (def. 3). Also pas·til (pas′til). [<MF <L pastillus a little loaf, a lozenge,? dim. of pasta PASTE1]
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