Definitions for: Opalesce

[v] exhibit a play of colors like that of an opal; "This nitrate opalesces under certain conditions"
[v] reflect light or colors like an opal; "Distant clouds opalesce like pale brocade"; "raindrops caught in a sunbeam seem to opalesce"

Webster (1913) Definition: O`pal*esce", v. i. [imp. & p. p. Opalesced; p. pr.
& vb. n. Opalescing.]
To give forth a play of colors, like the opal.

See Also: iridesce, reflect, shine