IPA: /ˈspɛkjʊlər/
KK: /ˈspɛkjələr/
Relating to or resembling a mirror, often used to describe surfaces that reflect light.
The lake had a specular surface, perfectly reflecting the trees and sky above.
Specular is formed from "speculum" (meaning mirror) and the suffix "-ar" (indicating relating to). The word refers to something that is related to or resembling a mirror.
Think of a 'mirror' ('speculum') when you hear 'specular' — it helps you remember that it relates to something reflective.