Term: thulium: a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
Candidate hypernym: metallic element: any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. → 1
Candidate hypernym: genus aralia: type genus of Araliaceae; large widely distributed genus of shrubs and trees and vines: spikenard; Hercules'-club → 0
Candidate hypernym: apar: South American armadillo with three bands of bony plates → 0
Candidate hypernym: invariance: the nature of a quantity or property or function that remains unchanged when a given transformation is applied to it → 0
Candidate hypernym: health care: social insurance for the ill and injured → 0
Candidate hypernym: wind: the act of winding or twisting → 0
Candidate hypernym: telephone system: a communication system that transmits sound between distant points → 0
Candidate hypernym: propeller: a mechanical device that rotates to push against air or water → 0
Candidate hypernym: chondrite: a rock of meteoric origin containing chondrules → 0
Candidate hypernym: leaf spring: long narrow spring consisting of several layers of metal springs bracketed together → 0
Candidate hypernym: bombardon: a large shawm; the bass member of the shawm family → 0