WordReference Random House Unabridged Dictionary of American English © 2026
ceil•om•e•ter
(sē lom′i tər, si-),USA pronunciation n.
- Meteorologyan automatic device for measuring and recording the height of clouds by projecting a modulated beam of light onto a cloud base, receiving the reflection of light through a photoelectric apparatus, and computing the height by triangulation.
- ceil(ing) + -o- + -meter 1940–45