Term: sigma: the 18th letter of the Greek alphabet
Candidate hypernym: symbol: an arbitrary sign (written or printed) that has acquired a conventional significance → 1
Candidate hypernym: tuner: someone who tunes pianos → 0
Candidate hypernym: euphuism: any artificially elegant style of language → 0
Candidate hypernym: ginseng: aromatic root of ginseng plants → 0
Candidate hypernym: archosaur: extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts → 0
Candidate hypernym: marquis: nobleman (in various countries) ranking above a count → 0
Candidate hypernym: tablet-armed chair: a chair with an arm that has been widened for writing → 0
Candidate hypernym: american gallinule: American purple gallinule → 0
Candidate hypernym: white separatism: a social system in which white people live separately from members of other races → 0
Candidate hypernym: trogon: forest bird of warm regions of the New World having brilliant lustrous plumage and long tails → 0
Candidate hypernym: antipope: someone who is elected pope in opposition to another person who is held to be canonically elected → 0