rugateadj.

Brit.

/ˈruːɡeɪt/, U.S.

/ˈruˌɡeɪt/

Origin: A borrowing from Latin. Etymon: Latin rūgātus.

Etymology: < classical Latin rūgātus having a wrinkled surface < rūga ruga n. + -ātus -ate suffix².

1. Botany and Zoology. Characterized by wrinkles or ridges; wrinkled. Cf. rugal adj.

ΘΚΠ

the world > animals > animal body > general parts > [adjective] > wrinkled

rugate1846

the world > life > biology > physical aspects or shapes > projection or protuberance > [adverb] > ridged

rugate1846

rugal1874

1846 J. D. Dana U.S. Exploring Exped.: Zoophytes 196 Disk brown,..rugate.

1877 S. Kurz Forest Flora Brit. Burma II. 422 Leaves broadly ovate, smooth or rugate, without glands.

1935 Trans. Amer. Entomol. Soc. 61 62 Side of pronutum flat and smooth except for small ventral rugate area.

1996 D. I. Gibson Trematoda in L. Margolis & Z. Kabata Guide Parasites of Fishes Canada IV. 102 Body surface usually smooth, but occasionally plicated or rugate.

2004 Amer. Fern Jrnl. 94 25 The perispore surface is rugate and perforations are evident.

2. Optics. Of a filter, coating, etc.: having a refractive index which varies smoothly in a regular, typically sinusoidal, manner with depth.Such filters can be used for blocking a narrow band of wavelengths.

ΚΠ

1987 U.S. Patent 4,707,611 1 A rugate filter..utilizes a gradient-index structure with a sinusoidal refractive index profile.

1992 R. B. Wood in M. A. Karim Electro-optical Displays ix. 362 Thin-film rugate coatings have been investigated for use on HUD combiners.

2008 P. M. Fauchet in N. Koshida Device Applic. Silicon Nanocrystals & Nanostructures x. 305 A thicker rugate filter leads to a sharper stopband, which increases the ability of the sensor to resolve [a] small shift in the spectrum.

This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022).

单词	rugate
释义	rugateadj. Brit. /ˈruːɡeɪt/, U.S. /ˈruˌɡeɪt/ Origin: A borrowing from Latin. Etymon: Latin rūgātus. Etymology: < classical Latin rūgātus having a wrinkled surface < rūga ruga n. + -ātus -ate suffix². 1. Botany and Zoology. Characterized by wrinkles or ridges; wrinkled. Cf. rugal adj. ΘΚΠ the world > animals > animal body > general parts > [adjective] > wrinkled rugate1846 the world > life > biology > physical aspects or shapes > projection or protuberance > [adverb] > ridged rugate1846 rugal1874 1846 J. D. Dana U.S. Exploring Exped.: Zoophytes 196 Disk brown,..rugate. 1877 S. Kurz Forest Flora Brit. Burma II. 422 Leaves broadly ovate, smooth or rugate, without glands. 1935 Trans. Amer. Entomol. Soc. 61 62 Side of pronutum flat and smooth except for small ventral rugate area. 1996 D. I. Gibson Trematoda in L. Margolis & Z. Kabata Guide Parasites of Fishes Canada IV. 102 Body surface usually smooth, but occasionally plicated or rugate. 2004 Amer. Fern Jrnl. 94 25 The perispore surface is rugate and perforations are evident. 2. Optics. Of a filter, coating, etc.: having a refractive index which varies smoothly in a regular, typically sinusoidal, manner with depth.Such filters can be used for blocking a narrow band of wavelengths. ΚΠ 1987 U.S. Patent 4,707,611 1 A rugate filter..utilizes a gradient-index structure with a sinusoidal refractive index profile. 1992 R. B. Wood in M. A. Karim Electro-optical Displays ix. 362 Thin-film rugate coatings have been investigated for use on HUD combiners. 2008 P. M. Fauchet in N. Koshida Device Applic. Silicon Nanocrystals & Nanostructures x. 305 A thicker rugate filter leads to a sharper stopband, which increases the ability of the sensor to resolve [a] small shift in the spectrum. This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022). < adj.1846
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