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bipedal

6 5.7
To move by walking on two feet
  • adjective
  • /ˈbaɪˌpɛdəl/
  • Specialized
translation icon : bípedo
  • Humans are distinctive because they are bipedal, walking upright on two feet.
  • bipedal ape
  • bipedal hominids
  • bipedal primitive ancestor

The most I mean, the reason I spent a long time working on bipedal walking was because it was hard, and it was.

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Examples

  • Padian says he believes the smaller pterosaurs were bipedal and therefore took off with two legs instead of four.

    Blog text (7)
  • The new fossil demonstrates that these early human ancestors were fully bipedal.

    Academic text (2011)
  • And you could tell what it was was a very powerful bipedal animal.

  • Well, we're bipedal, and we have two organs related by reflection that let us sense light and form images.

  • But what kind of huge bipedal creature can carry itself on such a narrow, three toed foot?

  • "Afarensis was, in a way, a bipedal primitive ancestor," says Zeresenay.

    Academic text (2007)
  • Descending human stairs should have been difficult for a bipedal creature only forty centimeters tall, but he flew down them with ease.

    Fiction book (2002)
  • Like other tyrannosaurids, Tyrannosaurus was a bipedal carnivore with a massive skull balanced by an extended, heavy tail.

    Blog text (2)
  • The theory inspired a flood of papers explaining why the savannah habitat inevitably resulted in humans becoming naked, bipedal, and large-brained.

    Academic text (1995)
  • We Homo sapiens are descended from bipedal primates—usually called hominids—that first appeared in Africa some 5 million years ago.

    Academic text (2003)

Synonyms

biped
vsbipedal
  • Specialized
1 6.7

Having two legs and walking on them

focuses on using two legs for locomotion rather than just possession
two-footed
vsbipedal
2.5

Standing or walking on two feet like a person

emphasizes walking on two legs for moving rather than mere possession

Antonyms

1 8.2

An animal or machine that moves on four legs like a dog

Surface Forms

bipedal positive

Morphology

bipedal = biped (transparent) = bi + ped + al

The word is transparently formed from biped plus the adjective suffix -al, preserving the meaning of 'two-footed'.

Etymology

The word bipedal comes from parts that mean 'two' and 'foot': bi- 'two' and ped 'foot', the same part you see in pedal and pedestrian. So a bipedal animal is one that walks on two feet or uses two legs to move.