Iridescent
adjective /ˌɪrɪˈdɛs(ə)nt/ — Showing many colours that shift and shimmer with movement.
Definition
Showing luminous colours that seem to change when seen from different angles — the quality of surfaces that produce colour through the interference of light rather than pigment alone.
Beyond the definition
Iridescence is colour as phenomenon rather than property — the soap bubble, the peacock feather, the hummingbird's throat, the inside of an oyster shell. The colour is not in the surface but in the angle of observation and the behaviour of light. It is inherently dynamic; only movement reveals it.
Origin & history
From Latin iris/iridis (rainbow), from Greek iris (rainbow, the goddess of the rainbow). The rainbow quality — multiple colours shifting with angle of light.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
The beetle's wing cases were iridescent — shifting from green to violet as she tilted it.
The bay had an iridescent quality at sunrise — all oil-slick and fire.
His arguments had an iridescent quality — what seemed like one thing from one angle was entirely different from another.
Synonyms
shimmering, prismatic, nacreous, opalescent
Antonyms
dull, flat, monochrome
Related words
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Illustrative example
Jellyfish drifting underwater
Several jellyfish drift together in blue water, their bodies catching and reflecting light in subtle, shifting colors.
The jellyfish surfaces produce color through the interference of light, giving them an iridescent quality. The colors seem to shift and move depending on the angle from which they are viewed, creating a luminous, changing effect in the blue water.
Image credit: W.carter · CC BY-SA 4.0 (license)
Resized and converted to WebP; displayed with a fitted crop.