OPAL

opal

(noun) a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones

Source: WordNet® 3.1

Etymology

Noun

opal (plural opals)

(mineral) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO₂·nH₂O.

(biology, genetics, biochemistry) A colloquial name used in molecular biology referring to a particular stop codon sequence, "UGA."

Any of various lycaenid butterflies of the genus Nesolycaena.

Anagrams

• OLAP, POLA, Palo, alop, aplo-, pola

Proper noun

Opal

A female given name from English from the precious stone, invented in the nineteenth century.

(Australia) A type of petrol made by British Petroleum designed to be unable to be used for petrol sniffing.[Developed 2005.]

A hamlet in Alberta, Canada

A census-designated place in Virginia

A town in Wyoming

Anagrams

• OLAP, POLA, Palo, alop, aplo-, pola

Source: Wiktionary

O"pal, n. Etym: [L. opalus: cf. Gr. upala a rock, stone, precious stone: cf. F. opale.] (Min.)

Definition: A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.

Note: The precious opal presents a peculiar play of colors of delicate tints, and is highly esteemed as a gem. One kind, with a varied play of color in a reddish ground, is called the harlequin opal. The fire opal has colors like the red and yellow of flame. Common opal has a milky appearance. Menilite is a brown impure variety, occurring in concretions at Menilmontant, near Paris. Other varieties are cacholong, girasol, hyalite, and geyserite.

Source: Webster’s Unabridged Dictionary 1913 Edition