porte-lumièren.

Brit.

/ˌpɔːtˈluːmɪɛː/,

/ˌpɔːtˌluːmɪˈɛː/, U.S.

/ˈˌpɔrtˌlumiˈɛ(ə)r/

Origin: A borrowing from French. Etymon: French porte-lumière.

Etymology: < French porte-lumière thing which spreads light (16th cent. in Middle French), reflector in a truncated cone (1799), instrument for introducing light into a dark place (1803) < porte- porte- comb. form + lumière light (see son et lumière n.).

Now rare.

An apparatus containing a plane mirror which can be adjusted so as to reflect the sun's light in any desired direction.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > instruments to refract, etc., light > [noun] > reflector

catoptric1628

heliostat1747

reflector1777

porte-lumière1877

1877 Amer. Naturalist 11 302 Besides the porte-lumière and magic lantern, other apparatus is described.

1884 Cent. Mag. 29 238/2 This apparatus consisted of a long photometer-box with a porte lumière at one end.

1902 School Rev. 10 147 Sunlight costs nothing, but some form of porte-lumière is necessary.

This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).

单词	porte-lumière
释义	porte-lumièren. Brit. /ˌpɔːtˈluːmɪɛː/, /ˌpɔːtˌluːmɪˈɛː/, U.S. /ˈˌpɔrtˌlumiˈɛ(ə)r/ Origin: A borrowing from French. Etymon: French porte-lumière. Etymology: < French porte-lumière thing which spreads light (16th cent. in Middle French), reflector in a truncated cone (1799), instrument for introducing light into a dark place (1803) < porte- porte- comb. form + lumière light (see son et lumière n.). Now rare. An apparatus containing a plane mirror which can be adjusted so as to reflect the sun's light in any desired direction. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instruments to refract, etc., light > [noun] > reflector catoptric1628 heliostat1747 reflector1777 porte-lumière1877 1877 Amer. Naturalist 11 302 Besides the porte-lumière and magic lantern, other apparatus is described. 1884 Cent. Mag. 29 238/2 This apparatus consisted of a long photometer-box with a porte lumière at one end. 1902 School Rev. 10 147 Sunlight costs nothing, but some form of porte-lumière is necessary. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022). < n.1877
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