opaline.
Resembling opal in having a milky white iridescence.
Meaning & usage
Resembling opal in having a milky white iridescence.
Where this word comes from
Etymology tree English opal Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English opaline From opal + -ine.
A clear to white liquid secreted by sea hares (genus Aplysia) that becomes viscous upon contact with water.
The attack on a sea hare by a spiny lobster causes release of the whitish opaline, followed the co-release of both opaline and ink.
Any of several minerals resembling opal, including a variety of yellow chalcedony.
Synonym of opal glass.
Where this word comes from
Etymology tree English opal Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English opaline From opal + -ine.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.