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[uhn-juh-luh nt, uhn-dyuh-, -duh-] /ˈʌn dʒə lənt, ˈʌn dyə-, -də-/
undulating; wavelike in motion or pattern:
an undulant edge.
Origin of undulant
1820-30; undul(ate) + -ant
Related forms
undulance, noun
nonundulant, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for undulant
  • We followed it upstream, the plane carving to and fro along a gently undulant approximation of the river's serpentine course.
  • In humans, it is known as undulant fever because of the intermittent fever accompanying infection.
  • Consumption of unpasteurized milk and dairy products can also cause undulant fever.
  • Brucellosis is a bacterial disease that is also referred to in humans as undulant fever.
  • In humans, this bacterial disease is called undulant fever, because the fevers tend to waver up and down.
  • Occasionally, people contract brucellosis called undulant fever in humans-from eating unpasteurized goat cheeses.
  • Last year, and infected herd was discovered after the producer developed undulant fever.
British Dictionary definitions for undulant


(rare) resembling waves; undulating
Derived Forms
undulance, noun
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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Word Origin and History for undulant

1830, from Latin undulans, from unda "wave" (see water).

Online Etymology Dictionary, © 2010 Douglas Harper
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