IPA: /ˈkrɪstəlaɪt/
KK: /ˈkrɪs.tə.laɪt/
A very small crystal or a tiny crystalline structure found in certain types of rocks, especially in volcanic glass.
The geologist examined the crystallites in the volcanic rock to understand its formation.
Crystallite is formed from "crystal" (from Greek "kristallos", meaning frozen or ice) and the suffix "-ite" (meaning a small or diminutive form). The word "crystallite" refers to a small crystal or a tiny crystalline structure.
Think of 'crystal' as something frozen or clear, and '-ite' indicating a small form — a crystallite is a small crystal.