電凸 でんとつ Also written 電突 Meanings Noun, する verb flooding a company, organization etc. with phone complaints (usu. loosely organized on anonymous online message boards) (from 電話突撃) See also: 電話突撃 (でんわとつげき). Kanji 電 electric. Read as デン. 凸 convex. Read as トツ. Word lists Internet slang Jinuma: Japanese Dictionary · Word lists