hydrogen maser atomic clock
Word Rarity
Very rare
Frequency: Zipf frequency 2.11 in modern English
46
Scrabble Score
24
Letters
5
Syllables
16
Unique Chars
Meaning
noun
An atomic clock which uses the 1.4 GHz transition in a hydrogen atom to measure time to within 0.45 nanosecond over a span of twelve hours.