ETALON


Meaning of ETALON in English

[ 'ɛtəlɒn ]

■ noun Physics a device consisting of two reflecting plates, for producing interfering light beams.

Origin

early 20th cent.: from Fr. étalon , lit. 'standard of measurement'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.