noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A sunroof that has a clear glass panel, rather than being opaque, so that light can enter the vehicle even when the roof is closed.

Etymology

From moon + roof, patterned on sunroof. Coined by the Ford Motor Company in the 1970s.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.