pegmatite

P3E1G2M3A1T1I1T1E1
/ˈpɛɡmətaɪt/

noun

A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

OriginAncient Greek πήγνυμι →
UncommonScrabble 14
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounpegmatite (countable and uncountable, plural pegmatites)

plural pegmatites

  1. countableuncountableA coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

Origin

  1. Ancient Greekπήγνυμι“to attach, join”
  2. Englishpegmatite

From Ancient Greek πήγνυμι (pḗgnumi, “to attach, join”) + -ite

More words from Ancient Greek

Full word history & related roots →
Cite this entry
APA

pegmatite. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/pegmatite

MLA

“pegmatite.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pegmatite. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “pegmatite,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/pegmatite.

Source: pegmatite on Wiktionary, CC BY-SA 4.0.