Also found in: Thesaurus, Encyclopedia, Wikipedia.
A transparent to translucent glassy mineral, essentially aluminum beryllium silicate, Be3Al2Si6O18, occurring in hexagonal prisms and constituting the chief source of beryllium. Transparent varieties in white, green, blue, yellow, or pink are valued as gems.
[Middle English, from Old French, from Latin bēryllus, from Greek bērullos, from bērullion, from Prakrit veruliya, from Pali veḷuriya; perhaps akin to Tamil veḷiru or viḷar, to whiten, become pale.]
ber′yl·line (-ə-lĭn, -līn′) adj.
(Minerals) a white, blue, yellow, green, or pink mineral, found in coarse granites and igneous rocks. It is a source of beryllium and is sometimes used as a gemstone; the green variety is emerald, the blue is aquamarine. Composition: beryllium aluminium silicate. Formula: Be3Al2Si6O18. Crystal structure: hexagonal
[C13: from Old French, from Latin bēryllus, from Greek bērullos, of Indic origin]
a mineral, beryllium aluminum silicate, Be3Al2Si6O18, varieties of which are the gems emerald and aquamarine: the principal ore of beryllium.
[1275–1325; Middle English beril (< Anglo-French) < Late Latin bērillus, Latin bēryllus < Greek bḗryllos]
ber•yl•ine (ˈbɛr ə lɪn, -ˌlaɪn) adj.
A usually green or bluish-green mineral that is a silicate of beryllium and aluminum. Beryl occurs as transparent to translucent prisms in igneous and metamorphic rocks. Transparent varieties, such as emeralds, are valued as gems. Beryl is the main source of the element beryllium.
Switch to new thesaurus
|Noun||1.||beryl - the chief source of beryllium; colored transparent varieties are valued as gems|
atomic number 4, Be, beryllium, glucinium - a light strong brittle grey toxic bivalent metallic element
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
aquamarine - a transparent variety of beryl that is blue green in color
emerald - a green transparent form of beryl; highly valued as a gemstone
morganite - a kind of pink beryl used as a gemstone