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Webster 1913 Edition


Syenite

Sy′e-nite

,
Noun.
[L.
Syenites
(sc.
lapis
), from
Syene
, Gr. [GREEK].]
(Min.)
(a)
Orig., a rock composed of quartz, hornblende, and feldspar, anciently quarried at Syene, in Upper Egypt, and now called
granite
.
(b)
A granular, crystalline, ingeous rock composed of orthoclase and hornblende, the latter often replaced or accompanied by pyroxene or mica. Syenite sometimes contains nephelite (elaeolite) or leucite, and is then called
nephelite (elaeolite) syenite
or
leucite syenite
.

Webster 1828 Edition


Syenite

SYENITE.

[See Sienite.]

Definition 2024


syenite

syenite

English

Noun

syenite (countable and uncountable, plural syenites)

  1. (geology, obsolete) Granite.
  2. (geology) An igneous rock composed of feldspar and hornblende.

Translations