Phōs'phor-ēsce', v. i.

(fŏs'for-ēs'), v. i. (imp. & p. p. PHOSPHORESCED (fŏs'for-ēs't); p. pr. & vb. n. PHOSPHORESCING.) To shine, as phosphorus, by exhibiting a faint light without sensible heat.

Arenaceous limestone phosphoresces in the dark when scraped with a knife. Brande.