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 (bī-pĕd′l) or bi·ped (bī′pĕd′)
1. Having two feet; two-footed.
2. Walking on two feet.

bi·ped′al·ism (-pĕd′l-ĭz′əm), bi′pe·dal′i·ty (-pə-dăl′ĭ-tē) n.
bi·ped′al·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(baɪˈpɛdəˌlɪzəm; baɪˈpiːdəˌlɪzəm)
the condition or state of having two feet
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(baɪˈpɛd lˌɪz əm)

also bi•pe•dal•i•ty

(ˌbaɪ pɪˈdæl ɪ ti)

the condition of being two-footed or of using two feet for locomotion.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.bipedalism - the bodily attribute of being bipedalbipedalism - the bodily attribute of being bipedal; having two feet; "bipedalism made the human form of birth possible"
bodily property - an attribute of the body
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
'Of course, adult Psittacosaurus were not so huge, and the shift maybe reflects different modes of life: the babies were small and vulnerable and so probably hid in the undergrowth, whereas bipedalism allowed the adults to run faster and escape their predators.'
It's thought this conversion to savanna contributed to bipedalism as it became more and more dominant in human ancestors."
Yet, despite their definite bipedalism, they also seem to have spent much of their time climbing in trees, perhaps feeding, sleeping and escaping predators.
The dynamics of hylobatid bipedalism: evidence for an energy-saving mechanism?
While a group of authors stated that such anatomical variations could be due to the ossification of the posterior atlanto-occipital membrane or acquired ossification of the oblique ligament (lateral border of the posterior atlanto-occipital membrane which forms the aperture for the vertebral artery and the suboccipital nerve) as a consequence of the vertebral artery pulsation [3, 9], others claimed that the PP might be related to erect posture and bipedalism [14, 17].
Bipedalism and lumbar lordosis are often regarded as a cause of low back pain, through increased spinal shearing forces and increased risk of spondylolisthesis.
Read: ( Human Skull, Bipedalism Evolved Together
Walking, as a characteristic of bipedalism, involves a multitude of body parts from the brain, the peripheral nervous system, and the musculatures to the feedback sensory system.
The prevalent presence of this muscle in modern humans and gorillas, exclusively and mostly terrestrial, respectively, would point out an evolutionary acquisition related to "bipedalism" [5].
Small tweaks to a gene that makes a protein important for skeletal development may have led to the big toe and helped shape the human foot for bipedalism (SN: 2/6/16, p.