en ammonia clock (n, artifact)
― IsA ⟶
Weight: 2.0
en atomic clock (n, artifact) Source: Open Multilingual WordNet
en caesium clock (n, artifact)
― IsA ⟶
Weight: 2.0
en atomic clock (n, artifact) Source: Open Multilingual WordNet
en atomic clock (n, artifact)
― IsA ⟶
Weight: 2.0
en timepiece (n, artifact) Source: Open Multilingual WordNet
en atomic clock (n)
― IsA ⟶
Weight: 1.0
en clock (n) Source: OpenCyc 2012
en atomic clock (n)
― IsA ⟶
Weight: 1.0
en clock Source: English Wiktionary
en hydrogen maser atomic clock
― IsA ⟶
Weight: 1.0
en atomic clock (n) Source: English Wiktionary