from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Produced or cultivated in a test tube.
  • adj. Conceived by or developed from artificial insemination.


Sorry, no etymologies found.


  • Adopt 'em, test-tube 'em, hell ... kidnap 'em or however you wind up with 'em, if you love your children — really love them — when you are gone, the wound to them is a deep and punishing one, and we saw that in Paris 'tear-wracked attempt to convey her thoughts about her late father.

    Archive 2009-08-01

  • He held a test-tube between me and the light, and I noted the cloudy or muddy liquid it contained.

    Moon Face:The Shadow and the Flash

  • The narrow scientist with his nose in a test-tube cannot understand philosophy. '

    Chapter 1: My Eagle

  • Oh, I mean the real interpretative biology, from the ground up, from the laboratory and the test-tube and the vitalized inorganic right on up to the widest aesthetic and sociological generalizations.

    Chapter 27

  • He emptied the contents of another test-tube into it, and almost instantly it became clear and sparkling.

    Moon Face:The Shadow and the Flash

  • While a college economics major living on a kibbutz, Mr. Hurvitz worked part-time as a test-tube washer for Assia Chemical Laboratories, where his wife's father was managing partner.

    Former Test-Tube Washer Built Generic-Drug Maker Teva

  • Similarly, decorator Tom Delavan mixes in balloon-shaped test-tube vases with his super straight drinking glasses.

    Poshing Up Kitchen Shelves

  • Stanley Miller, of the Scripps Research Institute, outside San Diego—the deceased godfather of origins of life experimentation—famously found some precursors to the building blocks of life in 1954, opening the door to what was assumed to be a fairly imminent test-tube creation of life from nonlife.

    First Contact

  • Researchers at International Business Machines Corp. said they developed a tiny drug, called a nanoparticle, that in test-tube experiments showed promise as a weapon against dangerous superbugs that have become resistant to antibiotics.

    Big Blue's Tiny Bug Zapper

  • *** Technology Researchers at IBM said they have developed in collaboration with scientists in Singapore a tiny drug that in test-tube experiments shows promise of becoming a new weapon in the fight against antibiotic-resistant bacteria such as Methicillin-resistant Staphylococcus aureus, or MRSA.

    Business Watch


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