The story
- Englishcrystal
- Proto-Indo-European*gerbʰ-
- Proto-Hellenic*grə́pʰō
- Ancient Greekγρᾰ́φω (grắphō)
- Ancient Greekγραφή (graphḗ)
- Englishcrystallography
- English todaycrystallographic
From crystallography + -ic.
Etymology from Wiktionary, CC BY-SA 4.0.