brachiosaur: meaning, definition, pronunciation and examples
C1Formal, Academic, Technical (Palaeontology)
Quick answer
What does “brachiosaur” mean?
A type of very large, long-necked, herbivorous dinosaur from the Jurassic and Cretaceous periods.
Audio
Pronunciation
Definition
Meaning and Definition
A type of very large, long-necked, herbivorous dinosaur from the Jurassic and Cretaceous periods.
The term can be used metaphorically to refer to something of enormous size, antiquity, or slowness.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling remains the same.
Connotations
Identical connotations of immense size and prehistoric nature.
Frequency
Equally low frequency in both varieties, confined to specific educational, documentary, or technical contexts.
Grammar
How to Use “brachiosaur” in a Sentence
The [adjective] brachiosaur [verb, past tense]...A brachiosaur, which [relative clause]...Scientists discovered a brachiosaur [prepositional phrase].Vocabulary
Collocations
Examples
Examples of “brachiosaur” in a Sentence
verb
British English
- [No standard verb form]
American English
- [No standard verb form]
adverb
British English
- [No standard adverb form]
American English
- [No standard adverb form]
adjective
British English
- The brachiosaur-like silhouette dominated the skyline.
- He had a brachiosaurian appetite.
American English
- The software update was brachiosaur-slow.
- They faced brachiosaur-sized logistical problems.
Usage
Meaning in Context
Business
Rarely used. Possibly metaphorical: 'The company is a brachiosaur in the industry, slow to adapt.'
Academic
Common in palaeontology, earth sciences, and biology textbooks and papers.
Everyday
Used when discussing dinosaurs, especially with children or in documentaries.
Technical
Precise taxonomic term for a genus within the family Brachiosauridae.
Vocabulary
Synonyms of “brachiosaur”
Strong
Neutral
Weak
Vocabulary
Antonyms of “brachiosaur”
Watch out
Common Mistakes When Using “brachiosaur”
- Misspelling as 'brachiasaur' or 'brachiosaures'. Confusing it with other sauropods like 'Brontosaurus' or 'Diplodocus'. Using it as a common noun without an article ('I saw brachiosaur').
FAQ
Frequently Asked Questions
Essentially, yes. 'Brachiosaurus' is the full genus name and is more commonly used. 'Brachiosaur' can refer to an individual of that genus or be a shortening of the name.
No. Most brachiosaur species lived during the Late Jurassic period (around 154-150 million years ago), while T. rex lived in the Late Cretaceous (about 68-66 million years ago). They were separated by over 80 million years.
It comes from Greek 'brachion' (arm) and 'sauros' (lizard), meaning 'arm lizard'. This refers to its unusually long forelimbs (arms) compared to its hind limbs.
It was among the largest, but not definitively the biggest. More recent discoveries, like Argentinosaurus and Patagotitan, suggest some titanosaurs were heavier and longer, though Brachiosaurus was exceptionally tall.
A type of very large, long-necked, herbivorous dinosaur from the Jurassic and Cretaceous periods.
Brachiosaur is usually formal, academic, technical (palaeontology) in register.
Brachiosaur: in British English it is pronounced /ˌbrækɪə(ʊ)ˈsɔː/, and in American English it is pronounced /ˌbrækiəˈsɔːr/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No established idioms for this technical term]”
Learning
Memory Aids
Mnemonic
Think of its BRACHIum (arm) bones, which were long like its neck: BRACHIO-saur. Or: It had to BRACE its huge body on its pillar-like legs.
Conceptual Metaphor
A BRACHIOSAUR IS A TOWERING GIANT / A LIVING CRANE (due to its long neck).
Practice
Quiz
What is the primary defining feature of a brachiosaur compared to other similar dinosaurs?