": a metallic element that occurs especially in zirconium minerals and is used in control rods for nuclear reactors \u2014 see Chemical Elements Table":[]
},
"examples":[
"Recent Examples on the Web",
"And many metals have production losses of 95 percent or higher: arsenic, gallium, germanium, hafnium , scandium, selenium, and tellurium. \u2014 John Timmer, Ars Technica , 20 May 2022",
"At this point, the whole device is covered with a thin layer of hafnium oxide, an insulator that provided a bit of space between the gate and the rest of the hardware. \u2014 John Timmer, Ars Technica , 10 Mar. 2022",
"The firm's Rare Metals division produces, reclaims, refines, and markets high-value niche metals and compounds that include gallium, indium, rhenium, tantalum, niobium, and hafnium . \u2014 Moneyshow, Forbes , 19 Mar. 2021",
"But today who needs to know the capital of South Dakota or the atomic number of hafnium (Pierre and 72)",
"Per the paper, the analysis determined that ratios of hafnium isotopes can be used to differentiate Alexandrian glass from Levantine glass decolorized with manganese. \u2014 Alex Fox, Smithsonian Magazine , 5 Aug. 2020",
"To avoid this issue, Barfod and her colleagues decided to look into the relative ratios of isotopes of the element hafnium . \u2014 Alex Fox, Smithsonian Magazine , 5 Aug. 2020",
"One notable example was the discovery of three particularly rare elements found \u2014 hafnium , uranium and tungsten. \u2014 Fox News , 1 Aug. 2019",
"This turned out to be a layer of hafnium oxynitride just eight atoms thick. \u2014 Daniel Oberhaus, WIRED , 11 July 2019"
"the blade of the adze is still good, but the haft is broken and will have to be replaced",
"Recent Examples on the Web: Noun",
"Handles helped make the tools easier to grip and more versatile; Wang and his colleagues found one bladelet with part of a bone haft still attached to the stone. \u2014 Kiona N. Smith, Ars Technica , 3 Mar. 2022",
"This chert bladelet still has a remnant of its bone haft attached. \u2014 Kiona N. Smith, Ars Technica , 3 Mar. 2022",
"The wooden haft is perfectly preserved & one of only a handful to survive in Britain. \u2014 Isis Davis-marks, Smithsonian Magazine , 13 Sep. 2021",
"An iris of a single, uniform color. Shoulder: Same as haft . \u2014 oregonlive , 7 May 2021",
"If Neanderthals were going to the trouble of putting tar on a small, everyday domestic tool like a flake (whether to attach it to a haft or just to make a simple grip), then producing tar in usable amounts must have been routine. \u2014 Kiona N. Smith, Ars Technica , 22 Oct. 2019",
"Recent Examples on the Web: Verb",
"There was the first time someone knapped and hafted a rock onto a spear shaft, and the first time someone strung up a bow. \u2014 Tyler Freel, Outdoor Life , 19 Mar. 2020",
"So the fact that archaeologists have found a handful of tools hafted using birch tar tells us that Neanderthals were (pardon the pun) pretty sharp. \u2014 Kiona N. Smith, Ars Technica , 22 Oct. 2019",
"Those fires may have been used to work on existing tools, not just haft new ones. \u2014 Kiona N. Smith, Ars Technica , 2 July 2019"
],
"history_and_etymology":{
"Middle English, from Old English h\u00e6ft ; akin to Old English hebban to lift \u2014 more at heave entry 1":"Noun"
