spicule: meaning, definition, pronunciation and examples
C1/C2 (Low frequency, technical/specialized)Technical/Scientific (Formal)
Quick answer
What does “spicule” mean?
A small, sharp, needle-like piece or structure.
Audio
Pronunciation
Definition
Meaning and Definition
A small, sharp, needle-like piece or structure.
Primarily used in astronomy to describe a jet of hot gas from the sun's surface, or in biology/zoology to describe a small, sharp skeletal element, such as those in sponges or sea urchins. It can also refer to a minute, sharp-pointed crystal or mineral formation.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Spelling and pronunciation are consistent across both varieties. It is equally technical in both contexts.
Connotations
Purely denotative; no additional positive or negative connotations.
Frequency
Extremely low frequency in general discourse, but standard within relevant scientific fields in both regions.
Grammar
How to Use “spicule” in a Sentence
The [material/type] spicule [verb, e.g., provides support, is visible, jets]...A spicule of [material, e.g., calcium carbonate, silica]...Vocabulary
Collocations
Usage
Meaning in Context
Business
Never used.
Academic
Used in academic papers within astrophysics, marine biology, geology, and materials science.
Everyday
Virtually never used in everyday conversation.
Technical
Core technical term in solar physics (describing solar prominences) and invertebrate zoology (describing skeletal elements).
Watch out
Common Mistakes When Using “spicule”
- Misspelling as 'spicual' or 'spicel'.
- Using it as a verb (it is only a noun).
- Assuming it has a general, non-technical meaning.
FAQ
Frequently Asked Questions
No, it is a low-frequency, specialised term used almost exclusively in scientific contexts like astronomy and biology.
No, 'spicule' is only used as a noun. There is no standard verb form.
A biological spicule is a small, structural skeletal element in organisms like sponges. An astronomical (solar) spicule is a jet of hot plasma erupting from the sun's surface.
It is pronounced /ˈspɪkjuːl/ (SPIK-yool), with the stress on the first syllable, in both British and American English.
A small, sharp, needle-like piece or structure.
Spicule is usually technical/scientific (formal) in register.
Learning
Memory Aids
Mnemonic
Think of a 'SPIKe' that is minisCULE' = SPICULE. It's a tiny, sharp point.
Conceptual Metaphor
N/A. The term is purely literal and descriptive.
Practice
Quiz
In which field would you be most likely to encounter the term 'spicule'?