Term: ozone layer: a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun
Candidate hypernym: layer: a relatively thin sheetlike expanse or region lying over or under another → 1
Candidate hypernym: criticism: disapproval expressed by pointing out faults or shortcomings → 0
Candidate hypernym: smooth plane: a small plane for finish work → 0
Candidate hypernym: saccharin: a crystalline substance 500 times sweeter than sugar; used as a calorie-free sweetener → 0
Candidate hypernym: saint: a person who has died and has been declared a saint by canonization → 0
Candidate hypernym: teratogen: any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples → 0
Candidate hypernym: playback: the act of reproducing recorded sound → 0
Candidate hypernym: sannup: a married male American Indian → 0
Candidate hypernym: ax head: the cutting head of an ax → 0
Candidate hypernym: stamp mill: a mill in which ore is crushed with stamps → 0
Candidate hypernym: fertilization membrane: the membrane that forms around a fertilized ovum and prevents penetration by additional spermatozoon → 0