Definition of nucleoside
: a compound (such as guanosine or adenosine) that consists of a purine or pyrimidine base combined with deoxyribose or ribose and is found especially in DNA or RNA
Recent Examples of nucleoside from the Web
His parents want to take him to the U.S. for nucleoside therapy.
With that, doctors concluded that nucleoside therapy would only prolong the child’s suffering.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nucleoside.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of nucleoside
International Scientific Vocabulary nucle- + 2-ose + -ide
First Known Use: 1911See Words from the same year
Learn More about nucleoside
Britannica.com: Encyclopedia article about nucleoside
Seen and Heard
What made you want to look up nucleoside? Please tell us where you read or heard it (including the quote, if possible).