Definition of opal

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Opal (n.) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity..

Lern More About Opal

"""opalotype " :: Opalotype (n.) A picture taken on milky glass..
Chloropal :: Chloropal (n.) A massive mineral, greenish in color, and opal-like in appearance. It is essentially a hydrous silicate of iron..
Archiepiscopal :: Archiepiscopal (a.) Of or pertaining to an archbishop; as, Canterbury is an archiepiscopal see..
Nopal :: Nopal (n.) A cactaceous plant (Nopalea cochinellifera), originally Mexican, on which the cochineal insect feeds, and from which it is collected. The name is sometimes given to other species of Cactaceae..
Syncopated :: Syncopal (a.) Of or pertaining to syncope; resembling syncope.
Archbishop :: Archbishop (n.) A chief bishop; a church dignitary of the first class (often called a metropolitan or primate) who superintends the conduct of the suffragan bishops in his province, and also exercises episcopal authority in his own diocese..
Non-episcopal :: Non-Episcopal (a.) Not Episcopal; not pertaining to the Episcopal church or system.
Amorphism :: Amorphism (n.) A state of being amorphous; esp. a state of being without crystallization even in the minutest particles, as in glass, opal, etc..
Rubric :: Rubric (n.) The directions and rules for the conduct of service, formerly written or printed in red; hence, also, an ecclesiastical or episcopal injunction; -- usually in the plural..
Opalized :: Opalized (imp. & p. p.) of Opaliz.
Semiopal :: Semiopal (n.) A variety of opal not possessing opalescence.
Bishop :: Bishop (n.) In the Methodist Episcopal and some other churches, one of the highest church officers or superintendents..
Nasopalatine :: Nasopalatine (a.) Connected with both the nose and the palate; as, the nasopalatine or incisor, canal connecting the mouth and the nasal chamber in some animals; the nasopalatine nerve..
Nopalries :: Nopalries (pl. ) of Nopalr.
Prosopalgia :: Prosopalgia (n.) Facial neuralgia.
Chorepiscopus :: Chorepiscopus (n.) A country or suffragan bishop, appointed in the ancient church by a diocesan bishop to exercise episcopal jurisdiction in a rural district..
Heterotropal :: Heterotropal (a.) Alt. of Heterotropou.
Opalesce :: Opalesce (v. i.) To give forth a play of colors, like the opal..
Silica :: Silica (n.) Silicon dioxide, SiO/. It constitutes ordinary quartz (also opal and tridymite), and is artifically prepared as a very fine, white, tasteless, inodorous powder..
Orthotropal :: Orthotropal (a.) Alt. of Orthotropou.
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