stone canal: meaning, definition, pronunciation and examples
C2/Highly SpecializedTechnical/Scientific
Quick answer
What does “stone canal” mean?
A rigid, tube-like structure, often made of calcareous material, found in echinoderms (like starfish and sea urchins) that connects the madreporite (a sievelike plate) to the ring canal of the water vascular system.
Audio
Pronunciation
Definition
Meaning and Definition
A rigid, tube-like structure, often made of calcareous material, found in echinoderms (like starfish and sea urchins) that connects the madreporite (a sievelike plate) to the ring canal of the water vascular system.
In biology and zoology, specifically within echinoderm anatomy, it is a key component of the organism's hydraulic system used for locomotion, feeding, and respiration. It functions to filter and channel water into the internal canals.
Dialectal Variation
British vs American Usage
Differences
No lexical differences. Usage and spelling are identical in both scientific communities.
Connotations
Purely technical and descriptive with no cultural connotations.
Frequency
Extremely low frequency outside academic zoology, marine biology, or specialized textbooks. Identical rarity in both UK and US English.
Grammar
How to Use “stone canal” in a Sentence
The stone canal connects [the madreporite] to [the ring canal].Water passes through [the stone canal].Vocabulary
Collocations
Usage
Meaning in Context
Business
Not applicable.
Academic
Exclusively used in zoology, marine biology, and comparative anatomy papers and textbooks. E.g., 'The dissection revealed the stone canal linking the madreporite to the water vascular ring.'
Everyday
Virtually never used.
Technical
Core term in echinoderm morphology. Used in detailed anatomical descriptions, phylogenetic studies, and marine organism dissections.
Vocabulary
Synonyms of “stone canal”
Neutral
Watch out
Common Mistakes When Using “stone canal”
- Using it as a general term for any canal (e.g., Suez Canal) made of stone.
- Confusing it with 'semicircular canals' in the human ear.
- Misspelling as 'stone channel'.
- Assuming it is a large or macroscopic structure.
FAQ
Frequently Asked Questions
No. 'Stone' refers to its calcareous (calcium carbonate) composition, similar to chalk or limestone, which is secreted by the organism. It is a biological material, not a geological stone.
It is a defining anatomical feature of echinoderms, including starfish (Asteroidea), sea urchins (Echinoidea), sea cucumbers (Holothuroidea), brittle stars (Ophiuroidea), and crinoids.
In larger echinoderms, like big starfish, it may be visible as a small, chalky-white tube during careful dissection. Usually, it requires magnification for detailed study.
No, it is just one specific component. The water vascular system is a larger network including the madreporite, stone canal, ring canal, radial canals, ampullae, and tube feet.
A rigid, tube-like structure, often made of calcareous material, found in echinoderms (like starfish and sea urchins) that connects the madreporite (a sievelike plate) to the ring canal of the water vascular system.
Stone canal is usually technical/scientific in register.
Stone canal: in British English it is pronounced /ˈstəʊn kəˌnæl/, and in American English it is pronounced /ˈstoʊn kəˌnæl/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Imagine a tiny, stone-lined aqueduct (canal) inside a starfish, acting as the main pipe from its external water filter (madreporite) to its central ring road (ring canal).
Conceptual Metaphor
CENTRAL PIPEWORK / HYDRAULIC CONDUIT. The stone canal is conceptualized as a critical piece of internal plumbing or infrastructure for the organism's water-based system.
Practice
Quiz
What is the primary function of the stone canal in echinoderms?