| birefringence | (noun) splitting a ray into two parallel rays polarized perpendicularly | Synonyms: double refraction |
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| birefringent | (adjective) relating to or characterized by double refraction | - |
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| fringe | (noun) an ornamental border consisting of short lengths of hanging threads or tassels | - |
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| (noun) a border of hair that is cut short and hangs across the forehead | Synonyms: bang |
| (noun) a social group holding marginal or extreme views | - |
| (noun) a part of the city far removed from the center | Synonyms: outskirt |
| (noun) one of the light or dark bands produced by the interference and diffraction of light | Synonyms: interference fringe |
| (noun) the outside boundary or surface of something | Synonyms: outer boundary, periphery |
| (verb) decorate with or as if with a surrounding fringe | - |
| (verb) adorn with a fringe | - |
| fringed | (adjective) having a decorative edging of hanging cords or strips | - |
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| (adjective) surrounded as with a border or fringe; sometimes used in combination | - |
| (adjective) having edges irregularly and finely slashed | Synonyms: laciniate |
| fringepod | (noun) annual herb having pinnatifid basal leaves and slender racemes of small white flowers followed by one-seeded winged silicles | Synonyms: lacepod |
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| fringy | (adjective) at or constituting a border or edge | Synonyms: marginal |
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| infringe | (verb) advance beyond the usual limit | Synonyms: encroach, impinge |
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| (verb) go against, as of rules and laws | Synonyms: conflict, contravene, run afoul |
| infringement | (noun) a crime less serious than a felony | Synonyms: infraction, misdemeanor, misdemeanour, violation |
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| (noun) an act that disregards an agreement or a right | Synonyms: violation |