• Decimate

    Pronunciation

    • RP IPA: /ˈdÉ›.sɪ.meɪt/
    • US enPR: de-sÉ™'māt", IPA: /ˈdÉ›.sÉ™.meɪt/

    Origin

    From Latin decimare "to take the tenth (decimus) part of anything", in particular referring to the levying and payment of tithe and also the practice of capital punishment applied to one man at random (by lot) out of every ten in a legion; compare quintate.

    Full definition of decimate

    Verb

    1. Roman history To kill one man chosen by lot out of every ten in a legion or other military group.
    2. To reduce anything by one in ten, or ten percent.
      • 2007, Russell T Davies, The Sound of Drums, episode 12 of revived series 3 of Doctor Who:Shall we decimate them? That sounds good, nice word. Remove one-tenth of the population!
      • 1840, P J Proudhon, What is Property? (http://print.google.com/print?hl=en&id=zVx5JLepYrsC&pg=PA164&lpg=PA164&sig=NuyvXEikIdgZAnc17xlO_irqsm0):Out of nine hundred, ninety will be ejected, that the production of the others may be increased one-tenth. ... there will be eight hundred and ten laborers producing as nine hundred, while, to accomplish their purpose, they would have to produce as one thousand. ... Here, then, we have a society which is continually decimating itself.
    3. (historical) To exact a tithe or tax of 10 percent.
    4. To reduce to one-tenth.
    5. To severely reduce; to destroy almost completely.
    6. (computer graphics) To replace a high-resolution model with one of lower resolution but acceptably similar appearance.
      • 1999, Mihalisin, Timlin and Schwegler in Visualizing Multivariate Functions, Data and Distributions, collected in Readings in Information Visualization: Using Vision to Think, ISBN 1558605339, page 122:A decimate tool allows us to obtain a more coarse-grained view of the data over the full n-dimensional space.
      • 2001, Inside 3Ds Max 4, edited by Kim Lee, ISBN 0735710945, page 56:However, many times it is more practical to decimate existing high-res models because of time, money or manpower issues.
      • 2004, Geremy Heitz, Torsten Rohlfing and Calvin Maurer in Automatic Generation of Shape Models using Nonrigid Registration with a Single Segmented Template Mesh collected in Vision Modeling and Visualization 2004 ISBN 1586034723, page 74:Given this initial fine mesh, we smooth and decimate it to a desired mesh resolution.

    Usage notes

    The definition reduce by one in ten is occasionally cited as "the correct" definition, with severely reduce considered a misconception, arrived at by reading decimate as to reduce to one-tenth rather than by one-tenth.

    The Cambridge Guide to English Usage states that the nonspecific use of this word to mean devastate or severely reduce the numbers of is "nowadays the commonest use of the word in both British and American English, and it’s registered without comment in modern dictionaries." It also advises against using numbers with the term, as "They are redundant where it means 'reduce by one tenth', and where it doesn't they confound the arithmetic."

    http://print.google.com/print?hl=en&id=UA5syoe1kc0C&pg=PA144&lpg=PA144&sig=iBI36wGnmi-L71sDwui_l-rUwJs

    The 23 occurrences of decimate in the British National Corpus — compare decimates, decimated, and decimating — almost all clearly accord with the nonspecific sense. The only references to the historical sense are two complaints about modern usage and its critics. Neither of these actually uses the term to mean "reduce by one-tenth".

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