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semi-reflecting
semi-reflecting adj. 
/ˌsɛˌmaɪriˈflɛktɪŋ/, /ˌsɛmirəˈflɛktɪŋ/, /ˌsɛmiriˈflɛktɪŋ/ designating a material of low reflectivity (usually a film deposited on a transparent base) which permits partial reflection and partial transmission.
Brit. /ˌsɛmɪrᵻˈflɛktɪŋ/
, /ˌsɛmɪrᵻˈflɛktɪŋ/U.S. /ˌsɛˌmaɪrəˈflɛktɪŋ/
, /ˌsɛˌmaɪrəˈflɛktɪŋ//ˌsɛˌmaɪriˈflɛktɪŋ//ˌsɛmirəˈflɛktɪŋ//ˌsɛmiriˈflɛktɪŋ/ΚΠ
1927 Jrnl. Sci. Instruments 4 491 (heading) Semi-reflecting surfaces.
1946 Nature 20 July 101/2 For glass surfaces that have not been made semi-reflecting these [interference patterns] do not have the contrast of reflected interference patterns.
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