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MW→tachyon

tachyon

Flag: gbEnglishMerriam-Webster Dictionary
um-blue' role='heading' aria-level='2'>First Known Use
Noun
1855, in the meaning defined at sense 1
Verb
1917, in the meaning defined above
case​ment
noun
case·​ment
ˈkās-mənt

Definition

  • a window sash that opens on hinges at the side
    also a window with such a sash
First Known Use
Noun
1855, in the meaning defined at sense 1
Verb
1917, in the meaning defined above
case​ment
noun
case·​ment
ˈkās-mənt

Definition

  • a window sash that opens on hinges at the side
    also a window with such a sash