- a light-coloured coarse-grained plutonic igneous rock consisting of feldspars with hornblende or biotite
WordReference Random House Unabridged Dictionary of American English © 2026
sy•e•nite
(sī′ə nīt′),USA pronunciation n.
sy•e•nit•ic
(sī′ə nit′ik),USA pronunciation adj.
- Rocksa granular igneous rock consisting chiefly of orthoclase and oligoclase with hornblende, biotite, or augite.
- Greek syēní̄tēs (líthos); see -ite1
- Latin syēnītēs (lapis) (stone) of Syene
- 1790–1800;
Collins Concise English Dictionary © HarperCollins Publishers::
syenite /ˈsaɪəˌnaɪt/ n
'syenite' also found in these entries (note: many are not synonyms or translations):