Term: natural glass: magma of any composition that cooled very rapidly
Candidate hypernym: glass: a brittle transparent solid with irregular atomic structure → 1
Candidate hypernym: perception: the process of perceiving → 0
Candidate hypernym: professional: an athlete who plays for pay → 0
Candidate hypernym: razor fish: any of several small wrasses with compressed sharp-edged heads of the West Indies and Mediterranean → 0
Candidate hypernym: sicklepod: cosmopolitan tropical herb or subshrub with yellow flowers and slender curved pods; a weed; sometimes placed in genus Cassia → 0
Candidate hypernym: scandinavian: an inhabitant of Scandinavia → 0
Candidate hypernym: blue sage: blue-flowered sage of dry prairies of the eastern United States → 0
Candidate hypernym: gastrocybe lateritia: a species of Gastrocybe fungus that has a conic cap and a thin stalk; at first the stalk is upright but as it matures the stalk bends over and then downward; the cap then gelatinizes and a slimy mass containing the spores falls to the ground as the stalk collapses → 0
Candidate hypernym: heterostraci: extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not clear → 0
Candidate hypernym: cowper's gland: either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female → 0
Candidate hypernym: rocket fuel: an explosive charge that propels a rocket → 0