Webster's 1828 Dictionary
CHRYSOCOLLA
n.Carbonate of copper, of two subspecies, the blue and the green; formerly called blue and green chrysocolla, also mountain blue and mountain green. It occurs in crystals, stalactites and other forms.
Webster's 1913 Dictionary
CHRYSOCOLLA
Chrys "o *col `la, n. Etym: [L., fr. Gr. (Min. )
Defn: A hydrous silicate of copper, occurring massive, of a blue or greenish blue color.
New American Oxford Dictionary
chrysocolla
chrys o col la |ˌkrisəˈkälə ˌkrɪsəˈkɑlə | ▶noun a greenish-blue mineral consisting of hydrated copper silicate, typically occurring as opaline crusts and masses. ORIGIN late 16th cent. (in the Greek sense ): from Latin, from Greek khrusokolla, denoting a mineral used in ancient times for soldering gold.
Oxford Dictionary
chrysocolla
chrysocolla |ˌkrɪsə (ʊ )ˈkɒlə | ▶noun [ mass noun ] a greenish-blue mineral consisting of hydrated copper silicate, occurring as opaline crusts and masses. ORIGIN late 16th cent. (in the Greek sense ): from Latin, from Greek khrusokolla, denoting a mineral used in ancient times for soldering gold.
The Wordsmith Dictionary