calendar clock

noun

: a clock that shows the days of the week and month, phases of the moon, and sometimes other phenomena in addition to hours, minutes, and seconds

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now