IPA: /ˈrɛtɪnaɪt/
KK: /rɛtɪnaɪt/
A type of resin that looks like amber and is found with brown coal.
The geologist discovered a piece of retinite while examining the coal deposits.
Retinite is derived from "retina" (from Latin "retina", meaning net or network) and the suffix "-ite" (meaning related to or characterized by). The word refers to a substance or material that is related to or characterized by the retina, often used in a scientific context.
Think of the 'net' ('retina') that captures light in the eye, and remember that 'retinite' refers to something related to that net-like structure.