Skip to main content
apatosaur

apatosaur

1 9.9
A very large plant-eating dinosaur with a long neck that lived in North America
  • noun
  • /əˈpætəˌsɔr/
translation icon : apatosaurio
  • The bright green apatosaur was gazing in the direction of Hetman's bed.

Examples

  • It was only that the apatosaurs were so much larger.

    Fiction book (1990)
  • The animals in the mist were perfect Apatosaurs, medium-sized sauropods.

    Fiction book (1990)
  • She was an apatosaur, but her head was big and hard.

    Fiction book (2002)
  • Hermione, an apatosaur, stood nearby, watching over him.

    Fiction book (2001)
  • A large herd of apatosaurs was grazing at the edge of the lagoon, eating the leaves of the upper branches of the palm trees.

    Fiction book (1990)
  • Alongside the apatosaurs, the smaller hadrosaurs stood on their hind legs to get at foliage.

    Fiction book (1990)
  • It's really quite a shambles, but Tibor, a runt of an apatosaur with a stem Beethoven-like face, sits there all day and hatches Napoleonic schemes.

    Fiction book (2001)
  • The apatosaur was known for its long neck, which helped it reach leaves high in the trees.

  • Paleontologists discovered a fossil of an apatosaur in North America, revealing its enormous size.

  • In many documentaries, the apatosaur is depicted roaming the lush landscapes of the late Jurassic period.

Synonyms

dinosaur
vsapatosaur
390 3.0

A large extinct animal from long ago, like T. rex

is a precise very large late Jurassic North American long-necked example
Brontosaurus
vsapatosaur
  • Specialized
3 6.5

A very large dinosaur with a long neck and tail that ate plants and walked on four legs

is the technical genus term preferred in formal lists
sauropod
vsapatosaur
  • Specialized
1 9.9

A very large plant-eating dinosaur with a small head and a very long neck and tail

is one specific member of this broad animal type rather than the type
Apatosaurus
vsapatosaur
  • Specialized
1 8.9

A very large plant-eating dinosaur with a long neck that walked on four legs

is the common or simplified name rather than the formal genus
brontosaur
vsapatosaur
  • US
1 8.9

A large plant-eating dinosaur with a very long neck and tail that walks on four legs

is the current formal genus term rather than the informal name
Diplodocus
vsapatosaur
  • Specialized
1 9.7

A very large dinosaur that eats plants and has a very long neck

is the same broad group but names the particular genus in focus
Brachiosaurus
vsapatosaur
  • Specialized
1 7.7

A very large dinosaur with a long neck that ate plants during the Jurassic

has more even leg proportions rather than higher front limbs
brachiosaur
vsapatosaur
1 8.7

A large, long-necked plant-eating dinosaur from the Jurassic with longer front legs than back legs

has more balanced front and back leg lengths rather than long front legs
Camarasaurus
vsapatosaur
  • Specialized
1 9.9

A large long-necked plant-eating dinosaur from the Jurassic with a box-shaped skull

is the genus described here, not the one with a box-shaped skull
Apatosaurus excelsus
vsapatosaur
  • Specialized
9.9

A large dinosaur that eats plants with a very long neck and tail

is the general genus term rather than one species
thunder lizard
vsapatosaur
  • Archaic
9.9

A large plant-eating dinosaur with a long neck and tail

is the technical genus or common name rather than a casual nickname
sauropod dinosaur
vsapatosaur
  • Specialized
9.1

A very large plant-eating dinosaur with a small head, long neck and long tail

is a specific North American late Jurassic example rather than the whole group
Sauropoda
vsapatosaur
  • Specialized
9.9

A group of very large plant-eating dinosaurs with long necks, long tails and four thick legs

is an individual genus example, not the whole scientific group
Sauropodomorpha
vsapatosaur
  • Specialized
9.9

A group of very large dinosaurs with long necks and small heads that eat plants

is a single late Jurassic genus, not the broad evolutionary clade
barosaurus
vsapatosaur
  • Specialized
9.9

A very large dinosaur with a long neck, as tall as a five-story building

is the specific genus discussed here rather than that other genus
barosaur
vsapatosaur
  • Specialized
9.9

A very large plant-eating dinosaur with a very long neck that reaches leaves high in trees

is the genus in question here, not that other tall genus
Seismosaurus
vsapatosaur
  • Specialized
9.9

A very large dinosaur that ate plants from the Late Jurassic, known from fossils in western North America

is the target genus here rather than a different giant genus

How Big

Argentinosaurus
  • Specialized
9.9
Brachiosaurus
  • Informal
1 8.6
apatosaur
1 9.9
sauropod dinosaur
  • Specialized
9.1

Surface Forms

apatosaur singular
apatosaurs plural

Morphology

apatosaur = Apatosaurus (semi-transparent) = apato + saur

The form is a clipped variant of Apatosaurus (a recognizable dinosaur name), so learners may guess it refers to a dinosaur, but the internal Greek combining forms are not productive English morphemes for most learners.

Etymology

The word apatosaur comes from the Greek parts apate 'trick' and sauros 'lizard'. The apate part is like the English word 'deceive', and sauros is the same root you see in 'dinosaur'. So apatosaur means 'deceptive lizard', which is a helpful image because this very large, long-necked dinosaur was often confused with the better-known 'brontosaurus'.