excalation [ĕk′skə-lā′shən] n.

  1. The absence, suppression, or failure to develop one member of a series, such as a finger or vertebra.

The American Heritage® Stedman’s Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Examples from the Web for excalation Historical Examples of excalation

  • In fact, more or less complete “excalation” of the somite takes place.

    Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3


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