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MW→backswimmer

backswimmer

Flag: gbEnglishMerriam-Webster Dictionary
span role='text' aria-label='sense 2'> the head of a comet consisting of a cloud of gas and dust and usually containing a nucleus
  • an optical aberration in which the image of a point source is a comet-shaped blur
    • Other Words
    Noun (2)
    • co​mat​ic kō-ˈma-tik adjective
    First Known Use
    Noun (1)
    1646, in the meaning defined at sense 1
    Noun (2)
    1669, in the meaning def
    span role='text' aria-label='sense 2'> the head of a comet consisting of a cloud of gas and dust and usually containing a nucleus
  • an optical aberration in which the image of a point source is a comet-shaped blur
    • Other Words
    Noun (2)
    • co​mat​ic kō-ˈma-tik adjective
    First Known Use
    Noun (1)
    1646, in the meaning defined at sense 1
    Noun (2)
    1669, in the meaning def
    backswimmer — MW · Shobdo