Term: half life: the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
Candidate hypernym: time period: an amount of time → 1
Candidate hypernym: european central bank: the central bank of those members of the European Union who share a common currency → 0
Candidate hypernym: flat-coated retriever: an English breed having a shiny black or liver-colored coat; retrieves game from land or water → 0
Candidate hypernym: flower arrangement: a decorative arrangement of flowers → 0
Candidate hypernym: tortricidae: leaf rollers and codling moths → 0
Candidate hypernym: vulcanizer: someone who vulcanizes rubber to improve its strength and resiliency → 0
Candidate hypernym: manipulation: exerting shrewd or devious influence especially for one's own advantage → 0
Candidate hypernym: dining-hall: a large room at a college or university; used especially for dining → 0
Candidate hypernym: bowel movement: a euphemism for defecation → 0
Candidate hypernym: punched card: a card on which data can be recorded in the form of punched holes → 0
Candidate hypernym: negative reinforcing stimulus: a reinforcing stimulus whose removal serves to decrease the likelihood of the response that produced it → 0