whiten

动词 v.
中文释义

英文释义

动词 v.
  1. (To cause) to become white or whiter; to bleach or blanch. ergative
    — Age had whitened his hair.
  2. To increase the security of an iterated block cipher by steps that combine the data with portions of the key.
  3. To normalize data so that the covariance matrix becomes the identity matrix; i.e., to remove correlations so each variable has unit variance.

词形变化

whitens present,singular,third-person whitening participle,present whitened participle,past whitened past

词汇关系

衍生词
prewhiten

词源

From Middle English whitenen, whitnen, from Old Norse hvítna (“to whiten”), from Proto-Germanic *hwītnōną (“to whiten, become white”), from Proto-Indo-European *kwind-, *kwint- (“bright”), equivalent to white + -en. Cognate with Icelandic hvítna (“to whiten”), Swedish vitna, hvitna (“to whiten”), Danish hvidne (“to whiten”). Compare Old English hwītian (“to whiten, become white, be white, make white”).
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