autotomy
C1Formal, Scientific, Technical
Definition
Meaning
The defensive self-amputation of a body part, typically a limb or tail, by an animal.
In biology, a process where an animal sheds or detaches a part of its body to escape a predator. In a broad figurative sense, it can describe any strategic self-removal or sacrifice of a part to save the whole.
Linguistics
Semantic Notes
Primarily a biological/zoological term. Figurative use is rare but understood in academic or metaphorical contexts.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling and pronunciation are consistent.
Connotations
Neutral scientific term in both regions.
Frequency
Equally low-frequency and specialist in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
Noun (subject of 'perform', 'exhibit', 'undergo')Noun (object of 'study', 'observe', 'describe')Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Virtually never used. A forced metaphorical analogy might be 'corporate autotomy' for divesting a failing division.
Academic
Common in zoology, ecology, and evolutionary biology papers.
Everyday
Extremely rare; would require explaining.
Technical
Standard term in herpetology (study of reptiles/amphibians) and invertebrate zoology.
Examples
By Part of Speech
verb
British English
- The lizard will autotomise its tail if grasped.
- Species that autotomise easily have specialised fracture planes.
American English
- The salamander can autotomize its limb.
- Crabs autotomize their claws as a last resort.
adjective
British English
- The autotomic fracture plane is clearly visible under the microscope.
- An autotomic response was triggered.
American English
- The starfish has autotomic capabilities.
- Researchers studied the autotomic reflex.
Examples
By CEFR Level
- Some lizards can lose their tails. This is called autotomy.
- Caudal autotomy is a common defence mechanism among many lizard species, allowing them to escape predators.
- The evolutionary advantage of autotomy lies in the trade-off between immediate survival and the long-term cost of losing a limb, which may regenerate imperfectly.
Learning
Memory Aids
Mnemonic
Think: AUTO (self) + TOMY (cutting), like in 'anatomy' or 'lobotomy'. It's a 'self-cutting'.
Conceptual Metaphor
SACRIFICING A PART TO SAVE THE WHOLE (e.g., 'The company performed an autotomy, selling its flagship store to avoid bankruptcy').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Not related to 'автоматия' (automaticity).
- Do not confuse with 'автотомия' (the correct loan translation).
- The stress falls on the second syllable (авто-ТО-мия).
Common Mistakes
- Misspelling as 'autonomy'.
- Incorrect plural 'autotomies'.
- Using it as a verb ('to autotomise' is the verb form).
Practice
Quiz
Which of these animals is NOT typically associated with autotomy?
FAQ
Frequently Asked Questions
It is generally considered a reflexive, nerve-mediated response with minimal initial pain due to rapid constriction of blood vessels, but the stump may be sensitive.
No. Humans do not have this biological capability. The term is strictly zoological, though used metaphorically.
Autotomy is the act of shedding the body part. Regeneration is the subsequent process of regrowing it. Not all animals that perform autotomy can regenerate.
No. Regeneration depends on the species. Lizards often regrow tails (cartilaginous), but the new tail is different. Many invertebrates like crabs can regrow limbs over several moults.