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semi-reflector
semi-reflector n. 
/ˈsɛˌmaɪriˌflɛktər/, /ˈsɛmirəˌflɛktər/, /ˈsɛmiriˌflɛktər/
Brit. /ˈsɛmɪrᵻˌflɛktə/
, /ˈsɛmɪrᵻˌflɛktə/U.S. /ˈsɛˌmaɪrəˌflɛktər/
, /ˈsɛˌmaɪrəˌflɛktər//ˈsɛˌmaɪriˌflɛktər//ˈsɛmirəˌflɛktər//ˈsɛmiriˌflɛktər/ΚΠ
1945 Jrnl. Sci. Instruments 22 103/1 Before 1936, the majority of semi-reflectors were made by chemical deposition of silver.
1976 Z. Knittl Optics of Thin Films ix. 397 Chebyshev-type semireflectors..may be only one of the ways of achieving a broad-band maximum.
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