About: atomic clock

Premodifier: atomic
Head noun: clock

Same concepts
http://dbpedia.org/resource/Atomic_clock

Broader concepts

label	provenance	confidence
device	isap:157658450	0.845108
precision instrument	isap:259380928	0.808718
clock	isap:370331759	0.734939
sophisticated instrument	isap:259380927	0.720214
timing device	isap:157658463	0.708341
source	isap:158234710	0.700512
time	isap:195021052	0.680248
time source	isap:158234709	0.667881
clock in the world	isap:370331775	0.667611
technology	isap:258876750	0.635381
accurate clock	isap:370331758	0.565741
type of clock	isap:194923323	0.547701
time signal	isap:155412358	0.537439
thing	isap:373673124	0.515841
application	isap:206801387	0.504411
instrument	isap:259380930	0.479897
work	isap:195362442	0.416585
process	isap:225998772	0.367216
too	isap:327298240	0.202640

Narrower concepts

label	provenance	confidence
cesium clock	isap:370331766	0.771890
accurate clock	isap:370331888	0.576737
gp	isap:464996037	0.291422
clock	isap:370331774	0.286070