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

  • n. Disintegration of cells into membrane-bound particles that are then eliminated by phagocytosis or by shedding.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival


from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek ἀπόπτωσις (apoptōsis, "a falling off"), from ἀπό (apo, "away from") + πτῶσις (ptōsis, "falling").


  • She thought of how the word apoptosis meaning “cell death,” came from the Greek word for “falling leaves.”

    The Life You Longed For

  • The process of cells dying is a highly controlled one that is called apoptosis, which is a Greek word that means “petals dropping off a plant.”

    Chicken Soup for the Soul: The Cancer Book

  • So, when a telomere gets short, that's when either senescence or apoptosis is triggered.

    Carol W. Greider - Interview

  • In neurons this is called apoptosis; in humans it is called depression, grief, and suicide.

    The Chemistry of Calm

  • When they exposed cancer cells to these phytonutrients, the cells self-destructed technically, such self-destruction is called apoptosis.

    The Fiber35 Diet

  • Older men's sperm is also less likely to undergo a self-destruct mechanism called apoptosis, which is meant to get rid of damaged cells.

    Home | Mail Online

  • This component blocked the growth of tumor cells, as well as of new blood vessels, and killed cancer cells directly through a process known as apoptosis.

    Dr. Richard Palmquist: Science Rediscovers the Forgotten Herb Andrographis

  • Of critical importance is the fact that increased IGF-1 levels block natural defense mechanisms, known as apoptosis, against early submicroscopic cancers.

    Samuel S. Epstein: An FDA Ban On Genetically-Engineered Milk Is 20 Years Overdue

  • Of generally unrecognized and critical importance is the fact that increased IGF-1 levels also block a natural defense mechanisms, known as apoptosis or programmed self-destruction.

    Samuel S. Epstein: The Dangers of Genetically Engineered Milk

  • In Forever Young you will learn new, effective, and safe strategies to protect the mitochondria, the mitochondrial DNA, and other parts of the cell from this programmed cell death, known as apoptosis, starting with the miraculous therapeutic powers of niacinamide vitamin B3, which you will read about on page 107.

    Forever Young


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