Term: planetary nebula: a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star
Candidate hypernym: nebula: an immense cloud of gas (mainly hydrogen) and dust in interstellar space → 1
Candidate hypernym: moon shell: marine gastropods having smooth rounded shells that form short spires → 0
Candidate hypernym: pilot: a person qualified to guide ships through difficult waters going into or out of a harbor → 0
Candidate hypernym: balance of trade: the difference in value over a period of time of a country's imports and exports of merchandise → 0
Candidate hypernym: yellow-blue dichromacy: confusion of yellow and blue → 0
Candidate hypernym: eysenck personality inventory: a self-report personality inventory based on Hans Eysenck's factor analysis of personality which assumes three basic factors (the two most important being extraversion to introversion and neuroticism) → 0
Candidate hypernym: kaopectate: trade name for a fixed-combination antidiarrheal drug that use kaolin as the adsorbent and pectin as the emollient → 0
Candidate hypernym: fijian: a native or inhabitant of Fiji → 0
Candidate hypernym: wallet: a pocket-size case for holding papers and paper money → 0
Candidate hypernym: locker: a fastener that locks or closes → 0
Candidate hypernym: eye operation: any surgical procedure involving the eyes → 0