Trachyandesite
/ˌtræk.iˈæn.də.saɪt/noun
A volcanic rock intermediate in composition between trachyte and andesite.
Did you know?Trachyandesite is a modern scientific coinage built from Greek roots, and its name literally encodes its position as a hybrid rock between trachyte and andesite rather than a single ancient “mystical” word.
Etymological Timeline
Ancient Greek
GRK
τραχύς (trakhýs)
“rough, shaggy, uneven”
Ancient Greek
GRK
Andes
“the Andes mountain range (source of the rock name andesite)”
19th Century
English
andesite
“a volcanic rock first named from the Andes”
19th Century
English
trachyte
“a rough-textured volcanic rock”
Modern English
English
trachyandesite
“a volcanic rock intermediate between trachyte and andesite”
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