Nyct-

1.
a combining form meaning “night,” used in the formation of compound words:
nyctalgia.

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Nyctaginaceous
[nik-tuh-juh-ney-shuh s] /ˌnɪk tə dʒəˈneɪ ʃəs/ adjective 1. belonging to the Nyctaginaceae, the four-o’clock family of plants. /ˌnɪktədʒɪˈneɪʃəs/ adjective 1. of, relating to, or belonging to the Nyctaginaceae, a family of mostly tropical plants, including bougainvillea, having large coloured bracts surrounding each flower
Nyctalgia
[nik-tal-juh, -jee-uh] /nɪkˈtæl dʒə, -dʒi ə/ noun, Pathology. 1. night pain that occurs in the sleep. nyctalgia nyc·tal·gi·a (nĭk-tāl’jē-ə, -jə) n. Night pain, especially the bone pains of syphilis occurring at night.
Nyctalopia
[nik-tl-oh-pee-uh] /ˌnɪk tlˈoʊ pi ə/ noun, Ophthalmology. 1. . 2. . /ˌnɪktəˈləʊpɪə/ noun 1. inability to see normally in dim light Nontechnical name night blindness Compare hemeralopia nyctalopia nyc·ta·lo·pi·a (nĭk’tə-lō’pē-ə) n. A condition of the eyes in which vision is normal in daylight or other strong light but is abnormally weak or completely lost at […]