alkyne: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “alkyne” mean?
A hydrocarbon containing at least one carbon–carbon triple bond.
Audio
Pronunciation
Definition
Meaning and Definition
A hydrocarbon containing at least one carbon–carbon triple bond.
A class of unsaturated hydrocarbons with the general formula CₙH₂ₙ₋₂, chemically reactive due to the triple bond; the simplest and most important member is acetylene (ethyne).
Dialectal Variation
British vs American Usage
Differences
No significant lexical or conceptual differences. Pronunciation may vary slightly (see IPA). Spelling is identical.
Connotations
Purely technical, no cultural connotations in either variety.
Frequency
Equally rare outside chemistry contexts in both varieties. Frequency is tied entirely to educational and professional scientific discourse.
Grammar
How to Use “alkyne” in a Sentence
[alkyne] + [verb: undergoes, reacts, forms][adjective: terminal, internal, substituted] + [alkyne][alkyne] + [preposition: with, to, into] + [reagent/product]Vocabulary
Collocations
Examples
Examples of “alkyne” in a Sentence
adjective
British English
- The alkyne functionality was confirmed by IR spectroscopy.
- They studied alkyne reactivity under various conditions.
American English
- The alkyne moiety is the key reaction site.
- Alkyne chemistry is a major chapter in the textbook.
Usage
Meaning in Context
Business
Not used.
Academic
Core terminology in organic chemistry textbooks, lectures, and research papers.
Everyday
Virtually never used. Possibly encountered in advanced secondary school science.
Technical
Essential term in chemical synthesis, petrochemistry, and materials science documentation.
Vocabulary
Synonyms of “alkyne”
Neutral
Weak
Vocabulary
Antonyms of “alkyne”
Watch out
Common Mistakes When Using “alkyne”
- Misspelling as 'alkine' (which could be confused with 'alkali' compounds).
- Mispronouncing the final syllable as /kiːn/ (like 'keen') instead of /kaɪn/ (like 'kine').
- Using it as a countable noun for a single molecule without an article ('This is alkyne' vs 'This is an alkyne').
FAQ
Frequently Asked Questions
The simplest alkyne is ethyne, commonly known as acetylene (C₂H₂).
Symmetrical alkynes like ethyne are nonpolar, but unsymmetrical ones can have a small dipole moment. The C-H bond in terminal alkynes is slightly acidic.
Some alkynes are found naturally, often in plants and fungi, where they can act as defensive toxins or signalling molecules.
Acetylene (ethyne) is widely used in oxy-acetylene torches for cutting and welding metals due to the high temperature of its flame.
Alkyne is usually technical/scientific in register.
Alkyne: in British English it is pronounced /ˈæl.kaɪn/, and in American English it is pronounced /ˈæl.kaɪn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think 'ALK' like in 'alkali' (other chemical term) + 'YNE' which rhymes with 'triple bond' – 'alk-YNE has a triple bond line'.
Conceptual Metaphor
The triple bond is often metaphorically described as a 'high-energy spring' or a 'site of high reactivity' waiting to be 'opened' or 'broken'.
Practice
Quiz
What is the general formula for a non-cyclic alkyne?