opal


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Related to opal: black opal, birthstones

o·pal

(ō′pəl)
n.
1. A mineral of hydrated silica.
2. A gemstone made of this mineral, noted for its rich iridescence.

[Early Modern English, from Middle French opale, from Latin opalus, alteration of Greek opallios, probably from Sanskrit upalaḥ, stone, precious stone (often in the sandhi form opalaḥ in the names of gems such as nīlopalaḥ, sapphire : nīla-, blue + upalaḥ), possibly variant of upara-, lower, from upa, towards, under, down; see upo in the Appendix of Indo-European roots.]

o′pal·ine′ (ō′pə-līn′, -lēn′) adj.

opal

(ˈəʊpəl)
n
(Minerals) an amorphous, usually iridescent, mineral that can be of almost any colour, found in igneous rocks and around hot springs. It is used as a gemstone. Composition: hydrated silica. Formula: SiO2.nH2O
[C16: from Latin opalus, from Greek opallios, from Sanskrit upala precious stone]
ˈopal-ˌlike adj

o•pal

(ˈoʊ pəl)

n.
1. a mineral, an amorphous form of silica, SiO2, with some water of hydration, found in many varieties and colors, including milky white.
2. a gemstone made of this, esp. of an iridescent variety.
[1350–1400; Middle English < Latin opalus < Greek opállios opal, gem]

o·pal

(ō′pəl)
A usually transparent mineral consisting of hydrous silica. Opal can occur in almost any color, but it is often pinkish white with a milky or pearly appearance. It typically forms within cracks in igneous rocks, in limestones, and in mineral veins. It also occurs in the silica-rich shells of certain marine organisms.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.opal - a translucent mineral consisting of hydrated silica of variable coloropal - a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
black opal - a dark colored opal with internal reflections of green or red
fire opal, girasol - an opal with flaming orange and yellow and red colors
harlequin opal - a reddish opal with small patches of brilliant color
opaque gem - a gemstone that is opaque
Translations
حَجَر عَيْن الشَّمْس: حَجَر كريم
opal
opál
ópall
opalas
opāls
opálopálový

opal

[ˈəʊpəl] Nópalo m

opal

[ˈəʊpəl] nopale f

opal

n (= stone)Opal m; (= colour)beigegraue Farbe
adjOpal-, opal-; (colour) → opalen (liter), → beigegrau schimmernd; opal blueopalblau; opal ringOpalring m

opal

[ˈəʊpl] nopale m or f

opal

(ˈoupəl) noun
a type of usually bluish-white or milky white precious stone, with slight traces or streaks of various other colours. There are three opals in her brooch; (also adjective) an opal necklace.
References in periodicals archive ?
Customers paying with a credit card will be charged the same as an Adult Opal single trip ticket, which is based on the distance travelled.
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And South African animal welfare organisation the SPCA has begged zoo owner Brian Boswell to send Opal to Monkey World in Wareham, Dorset, where she could live with 18 other orang-utans.
Even if your name is a derivative of "Opal"; such as Opalette, Opalina, Opala, Opalus etc qualifies you for your opal gift.
There appeared to be no telltale 'chicken wire' pattern in the synthetic opal cabochons when viewed superficially with a 10x loupe.
The owner of the factory, Mrs Roberts, takes Opal under her wing and introduces her to the suffragette movement and Emmeline Pankhurst.
The unique ability of Neptec's OPAL 3-D LiDAR to capture a real-time 3-D view of a harsh and dynamic mine environment, and then extract actionable information without the need for extensive manual post-processing of the data, enables many new geospatial data-driven applications in functional areas such as drill and blast, haulage and materials processing for mining.
The warp to be fitted with a 1:1 lease is prepared on the OPAL thread frame.
Education is a core element of OPAL activities and the national surveys are designed to teach participants more about the local environment they are surveying, not just to passively record or sort data.