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fontanelle

mainly US fontanel

/ (ˌfɒntəˈnɛl) /
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noun

anatomy any of several soft membranous gaps between the bones of the skull in a fetus or infant

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Word Origin for fontanelle

C16 (in the sense: hollow between muscles): from Old French fontanele, literally: a little spring, from fontaine fountain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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