aschelminthes: meaning, definition, pronunciation and examples
Extremely Rare / TechnicalSpecialist / Historical Scientific
Quick answer
What does “aschelminthes” mean?
A member of a historically-recognized, now polyphyletic group of invertebrates comprising nematodes and other worm-like organisms with a simple body cavity (pseudocoelom).
Audio
Pronunciation
Definition
Meaning and Definition
A member of a historically-recognized, now polyphyletic group of invertebrates comprising nematodes and other worm-like organisms with a simple body cavity (pseudocoelom).
The term is used in historical biological classification to refer to several phyla of pseudocoelomate animals, including Rotifera, Gastrotricha, Kinorhyncha, Priapulida, and Nematoda.
Dialectal Variation
British vs American Usage
Differences
No significant difference in usage between UK and US English. Both use it as a historical scientific term.
Connotations
Purely technical, historical, and academic. No colloquial connotations.
Frequency
Exclusively found in historical biological texts, older textbooks, and discussions of taxonomic history.
Grammar
How to Use “aschelminthes” in a Sentence
The <plural form> constitute a polyphyletic group.Historically, <plural form> included...<plural form> are characterised by a pseudocoelom.Vocabulary
Collocations
Examples
Examples of “aschelminthes” in a Sentence
adjective
British English
- The aschelminth body plan is simple.
- This represents an aschelminth characteristic.
American English
- The aschelminth body plan is simple.
- This is an aschelminth feature.
Usage
Meaning in Context
Business
Never used.
Academic
Used only in historical context in biology, taxonomy, or evolutionary studies. Not in contemporary scientific writing.
Everyday
Never used.
Technical
Used with caution, typically to denote an outdated classification system in invertebrate zoology.
Vocabulary
Synonyms of “aschelminthes”
Strong
Neutral
Weak
Vocabulary
Antonyms of “aschelminthes”
Watch out
Common Mistakes When Using “aschelminthes”
- Using it as a current taxonomic rank.
- Assuming it refers to a single, coherent biological group.
- Misspelling as 'aschelmynth' or 'aschelminthys'.
FAQ
Frequently Asked Questions
No, it is an obsolete taxonomic grouping. The animals once classified under it are now placed in several separate phyla based on phylogenetic evidence.
Commonly included phyla were Rotifera, Gastrotricha, Kinorhyncha, Priapulida, and Nematoda (roundworms).
Molecular and morphological studies showed that the animals grouped under Aschelminthes did not share a single common ancestor exclusive of other animals, making the group polyphyletic and thus invalid in cladistics.
Generally, no. You should use the specific, valid phylum names (e.g., Nematoda, Rotifera) and refer to 'Aschelminthes' only in a historical context if discussing taxonomic changes.
A member of a historically-recognized, now polyphyletic group of invertebrates comprising nematodes and other worm-like organisms with a simple body cavity (pseudocoelom).
Aschelminthes is usually specialist / historical scientific in register.
Aschelminthes: in British English it is pronounced /ˌaskɛlˈmɪnθiːz/, and in American English it is pronounced /ˌæskɛlˈmɪnθiz/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'ASK a HELMINTHologist about these MINTHE-S' (worms). It's an old term they'll explain.
Practice
Quiz
What is the primary reason 'Aschelminthes' is not used in modern taxonomy?