handwavium
hand·wav·i·um
Any hypothetical but unobtainable material with desirable engineering propertiesAny hypothetical but unobtainable material with desirable engineering properties.
UK/handˈweɪ.vi.əm/US/hændˈweɪ.vi.əm/
Meaning
1 senses(informal, uncountable)Any hypothetical but unobtainable material with desirable engineering properties.
Origin
From hand waving + -ium (“the chemical element suffix”).From hand waving + -ium (“the chemical element suffix”).
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Synonyms
1 synonymsWord family
4 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable