superlight1
/ˌsuːpəˈlʌɪt/ /ˈsuːpəlʌɪt/ /ˌsjuːpəˈlʌɪt/adjective
Extremely or exceptionally light.
Origin
Late 19th century; earliest use found in Transactions of the Philological Society. From super- + light.
superlight2
/ˌsuːpəˈlʌɪt/ /ˈsuːpəlʌɪt/ /ˌsjuːpəˈlʌɪt/Physics and Astronomy
adjective
Designating a speed greater than that of light; = superluminal.
Origin
1920s; earliest use found in Scientific Monthly. From super- + light.