Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Computerscybersicknesscy‧ber‧sick‧ness /ˈsaɪbəˌsɪknəs $ -bər-/ noun [uncountable] a feeling of illness caused by using a computer for long periods of time or being in a room with a lot of computers – used humorously ldoceonline.com