Opalesce
[,әupә'les]
Definition
(verb.) exhibit a play of colors like that of an opal; 'This nitrate opalesces under certain conditions'.
(verb.) reflect light or colors like an opal; 'Distant clouds opalesce like pale brocade'; 'raindrops caught in a sunbeam seem to opalesce'.
Edited by Diana--From WordNet
Definition
(v. i.) To give forth a play of colors, like the opal.
Checked by Eli