English dictionary
ammonia clock
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
-
an atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule
Source: WordNet 3.0
English dictionary
Definitions, examples, synonyms and antonyms from WordNet 3.0.
an atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule
Source: WordNet 3.0