Term: plutonium: a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239
Candidate hypernym: substance: the real physical matter of which a person or thing consists → 1
Candidate hypernym: western saxifrage: saxifrage having loose clusters of white flowers on hairy stems growing from a cluster of basal leaves; moist slopes of western North America → 0
Candidate hypernym: stele: the usually cylindrical central vascular portion of the axis of a vascular plant → 0
Candidate hypernym: title page: a page of a book displaying the title and author and publisher → 0
Candidate hypernym: preserve: a reservation where animals are protected → 0
Candidate hypernym: attack dog: a watchdog trained to attack on command → 0
Candidate hypernym: dhegiha: any member of a Siouan people speaking one of the Dhegiha languages → 0
Candidate hypernym: unitization: (psychology) the configuration of smaller units of information into large coordinated units → 0
Candidate hypernym: nonresistance: group refusal to resort to violence even in defense against violence → 0
Candidate hypernym: enuresis: inability to control the flow of urine and involuntary urination → 0
Candidate hypernym: allure: the power to entice or attract through personal charm → 0