: the protein shell of a virus particle surrounding its nucleic acid
Examples of capsid in a Sentence
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Once inside the host cell, the capsid is shed, and the virus begins copying itself.—New Atlas,
26 July 2025 But a series of stunning discoveries found that the capsid cone not only survives infection but plays a far more complex role in the production of new viruses.—
Jon Cohen,
New Yorker,
24 June 2025 Many other viruses have their own capsid proteins, which form a shell around their genetic material, so this drug’s triumph raises the exciting prospect that similar capsid inhibitors could fight other viral diseases.—science.org,
12 Dec. 2024 Our language model also identified a novel viral capsid protein that is widespread in the global oceans.—
Libusha Kelly,
The Conversation,
15 May 2024
Word History
Etymology
French capside, from Latin capsa case + French -ide-id entry 2