n.
Pronunciation: ˌ r ē - ˌ frak- ' tä-m ə -t ə r, ri-
Function: noun
Etymology: International Scientific Vocabulary
Date: circa 1859
: an instrument for measuring refractive indices (as for identification or the determination of sugar content)
– re · frac · to · met · ric \ ri- ˌ frak-t ə - ' me-trik \ adjective
– re · frac · tom · e · try \ ˌ r ē - ˌ frak- ' tä-m ə -tr ē , ri- \ noun