English dictionary



Hint: Wildcards can be used multiple times in a query.

English noun: ammonia clock

1. ammonia clock (artifact) an atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule


Broader (hypernym)atomic clock









Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
2024 onlineordbog.dk