Webster's 1828 Dictionary
APOPHYLLITE
n.[Gr. from, and a leaf; so called because of its tendency to exfoliate. ] A mineral occurring in laminated masses or in regular prismatic crystals, having a strong and peculiar pearly luster. Its structure is foliated, and when a fragment is forcibly rubbed against a hard body, it separates into thin lamens, like selenite. It exfoliates also before the flame of a lamp. From its peculiar luster, it is sometimes called by the harsh name, ichthyophthalmite, fish-eye stone.
Webster's 1913 Dictionary
APOPHYLLITE
A *poph "yl *lite, n. Etym: [Pref. apo- + Gr. (Min. )
Defn: A mineral relating to the zeolites, usually occurring in square prisms or octahedrons with pearly luster on the cleavage surface. It is a hydrous silicate of calcium and potassium.
New American Oxford Dictionary
apophyllite
a poph yl lite |əˈpäfəˌlīt, ˌapəˈfilīt əˈpɑfəlaɪt | ▶noun a mineral occurring typically as white glassy prisms, usually as a secondary mineral in volcanic rocks. It is a hydrated silicate and fluoride of calcium and potassium. ORIGIN early 19th cent.: from apo- + Greek phullon ‘leaf ’ + -ite 1 .
Oxford Dictionary
apophyllite
apophyllite |əˈpɒfɪlʌɪt | ▶noun [ mass noun ] a mineral occurring typically as white glassy prisms, usually as a secondary mineral in volcanic rocks. It is a hydrated silicate and fluoride of calcium and potassium. ORIGIN early 19th cent.: from apo- + Greek phullon ‘leaf ’ + -ite 1 .
The Wordsmith Dictionary