Term: hyperbolic geometry: (mathematics) a non-Euclidean geometry in which the parallel axiom is replaced by the assumption that through any point in a plane there are two or more lines that do not intersect a given line in the plane
Candidate hypernym: mathematics: a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement → 1
Candidate hypernym: tongue twister: an expression that is difficult to articulate clearly → 0
Candidate hypernym: nerita: a neritid gastropod having a short smooth or spirally ridged shell with thick usually toothed outer lip and toothed operculum → 0
Candidate hypernym: hatchet man: a professional killer → 0
Candidate hypernym: indian giver: an offensive term for someone who asks you to return a present he has given you → 0
Candidate hypernym: enamel: any smooth glossy coating that resembles ceramic glaze → 0
Candidate hypernym: codetalker: a secret agent who was one of the Navajos who devised and used a code based on their native language; the code was unbroken by the Japanese during World War II → 0
Candidate hypernym: suture: an immovable joint (especially between the bones of the skull) → 0
Candidate hypernym: oedogonium: type genus of Oedogoniaceae; freshwater green algae having long unbranched filaments; usually free-floating when mature → 0
Candidate hypernym: underproduction: inadequate production or less than expected → 0
Candidate hypernym: fine-tooth comb: a method of examining in minute detail → 0