Mindblown: a blog about philosophy.

  • Limes zero

    The greatest amount of toxin that, when mixed with one unit of antitoxin and injected into a guinea pig weighing 250 g, will cause no local edema.    

  • Absolute zero

    The temperature at which all molecular motion (translational, vibrational, rotational) ceases. It is the lowest possible temperature, 273.15°C or -459.6°F; equal to 0° Kelvin.  

  • Zenker’s fluid

    A tissue fixative consisting of mercuric chloride, potassium dichromate, glacial acetic acid, and water. It is used to examine cells, and particularly nuclei, in detail.    

  • Zelotypia

    Morbid or monomaniacal zeal in the interest of any project or cause. An excessive and unhealthy enthusiasm in any endeavor, occupation, or effort.  

  • Zeitgeber

    Any of the mechanisms in nature that keep internal biological clocks synchronized (entrained) with the environment. Zeitgebers can be physical, involving light or temperature (e.g., sunrise, sunset), or social, involving regular activities (e.g., consistent mealtimes).  

  • Zeisian

    To something originally described by Eduard Zeis.  

  • Zeis gland

    One of the sebaceous glands of the eyelid, close to the free edge of the lid. Each gland is associated with an eyelash.  

  • Zein

    A protein obtained from maize. It is deficient in tryptophan and lysine.  

  • Z disk

    A thin, dark disk that transversely bisects the I band (isotropic band) of a striated muscle fiber. The thin filaments, made primarily of actin, are attached to the Z disk; the area between the two Z disks is a sarcomere, the unit of contraction.  

  • Zavanelli maneuver

    In obstetrics, the manual return of the head of a partially born fetus with intractable shoulder dystocia to the vagina. This is followed by cesarean section.  

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