Definition

1. Verb (intransitive):
   • To exhibit a play of lustrous, rainbow-like colors that change depending on the angle of view or illumination. This optical phenomenon is caused by the diffraction, interference, or scattering of light from a surface or through a substance.

Usage

• The verb iridesce describes the action of something showing iridescence. It is an intransitive verb, meaning it does not take a direct object. The subject itself is the thing that displays the shifting colors.
• It is a formal or literary word, often used in scientific, descriptive, or poetic contexts.

Examples

• The soap bubble began to iridesce with bands of pink and green as it floated in the sunlight.
• In the museum, the ancient glass artifact iridesced under the carefully positioned lights.
• The oil slick on the wet pavement iridesces with a sickly but fascinating spectrum of colors.
• The hummingbird's throat feathers iridesce, flashing from black to brilliant ruby red as it turns its head.

Advanced Usage

• Present Participle (iridescing) as Adjective: Used to describe something in the act of displaying iridescence.
  • We watched the iridescing wings of the dragonfly.
• To cause to iridesce: While "iridesce" itself is intransitive, the effect can be described as being caused.
  • The prism iridesced the beam of light. (This is less common; typically, the light itself is said to iridesce, or the phrase "break into iridescent colors" is used.)

Variants and Related Words

• Iridescence (n): The visual property of showing iridescent colors.
  • The iridescence of the pearl was breathtaking.
• Iridescent (adj): Having or showing iridescence.
  • She wore an iridescent silk dress.
• Iridiscent (adj): A less common, alternative spelling of .

Synonyms

• Gleam with rainbow colors
• Shimmer with changing hues
• Exhibit opalescence (specifically a milky, pearly iridescence)

Antonyms

• Be matte
• Be dull
• Have a flat color

Notes

• Iridesce is closely related to, but distinct from, opalesce. While both involve shifting colors, specifically implies a milky, pearly luminescence reminiscent of an opal gemstone. Iridesce is the broader term for any rainbow-like color play.

Verb

1. be iridescent
   • The corals iridesced under the surface of the clear water