ribonucleoside: meaning, definition, pronunciation and examples
Very LowTechnical / Scientific
Quick answer
What does “ribonucleoside” mean?
A compound consisting of a ribose sugar molecule linked to a nitrogenous base (adenine, guanine, cytosine, or uracil) but without a phosphate group.
Audio
Pronunciation
Definition
Meaning and Definition
A compound consisting of a ribose sugar molecule linked to a nitrogenous base (adenine, guanine, cytosine, or uracil) but without a phosphate group.
The fundamental glycosylamine building block of RNA (ribonucleic acid). In biochemistry and molecular biology, it refers to the nucleoside form prior to phosphorylation into a ribonucleotide. Ribonucleoside analogues are also important as pharmaceutical agents.
Dialectal Variation
British vs American Usage
Differences
No differences in meaning, spelling, or pronunciation. Usage is identical across scientific communities.
Connotations
None beyond its precise biochemical definition.
Frequency
Extremely rare outside specialised academic (biochemistry, genetics, pharmacology) or technical industry (pharmaceutical) texts in both varieties.
Grammar
How to Use “ribonucleoside” in a Sentence
[ribonucleoside] + [of] + [base] (e.g., ribonucleoside of adenine)[adjective] + [ribonucleoside] (e.g., modified ribonucleoside)[ribonucleoside] + [analogue/inhibitor/transporter]Vocabulary
Collocations
Examples
Examples of “ribonucleoside” in a Sentence
adjective
British English
- The ribonucleoside composition was analysed.
- Ribonucleoside analogues are a key therapeutic class.
American English
- The ribonucleoside pool was depleted.
- Ribonucleoside metabolism is a target for drugs.
Usage
Meaning in Context
Business
Virtually never used. May appear in highly technical patent documents or pharmaceutical R&D reports.
Academic
Core term in biochemistry, molecular biology, genetics, and pharmacology. Common in research papers, textbooks, and lectures.
Everyday
Never used in everyday conversation.
Technical
Essential term in laboratory protocols, drug design (especially antivirals), and scientific manufacturing specifications.
Vocabulary
Synonyms of “ribonucleoside”
Neutral
Weak
Vocabulary
Antonyms of “ribonucleoside”
Watch out
Common Mistakes When Using “ribonucleoside”
- Misspelling as 'ribonucleotide' (which has a phosphate group).
- Using it as a countable noun without specification (e.g., 'a ribonucleoside' is vague; better: 'a purine ribonucleoside').
- Incorrect pluralisation: 'ribonucleosides' is standard.
FAQ
Frequently Asked Questions
No. A ribonucleoside is a base + sugar (ribose). A ribonucleotide (the monomer of RNA) is a ribonucleoside with one or more phosphate groups attached.
Almost exclusively in advanced biology, biochemistry, or pharmacology texts, research articles, and in the context of drug development (e.g., antiviral nucleoside analogues).
Adenosine, guanosine, cytidine, and uridine (corresponding to the bases adenine, guanine, cytosine, and uracil).
It fundamentally dictates whether the molecule is a component of RNA (ribonucleic acid) or DNA (deoxyribonucleic acid), which have different structures, stabilities, and biological roles.
A compound consisting of a ribose sugar molecule linked to a nitrogenous base (adenine, guanine, cytosine, or uracil) but without a phosphate group.
Ribonucleoside is usually technical / scientific in register.
Ribonucleoside: in British English it is pronounced /ˌrʌɪbə(ʊ)ˈnjuːklɪə(ʊ)sʌɪd/, and in American English it is pronounced /ˌraɪboʊˈnuːkliəˌsaɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'RIBO' for RNA's sugar (ribose) + 'NUCLEO' for the nucleus/base + 'SIDE' as in glycoside (sugar-linked compound). It's the RNA side of the nucleoside family.
Conceptual Metaphor
A LEGO® brick without the connector pin (phosphate). It's the basic, unactivated building block for constructing the RNA chain.
Practice
Quiz
What primarily distinguishes a ribonucleoside from a deoxyribonucleoside?