U₁L₁T₁R₁A₁M₃I₁C₃R₁O₁M₃E₁T₁E₁R₁

21 points

ULTRAMICROMETER is no goodvalid

Not a playable Scrabble word in NWL2023.

It is valid in CSW24·

a micrometer for measuring extremely small distances [n]

258,517 of 280,887 in CSW24·not in NWL2023